diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index ca968b9e..652d8f2f 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -295,6 +295,172 @@ function(add_obsforge_test_convobs target_prefix obs_type obs_source test_config
 
 endfunction()
 
+# ================================================================================
+# Function to add tests for conventional observations from prepbufr dynamically
+# ================================================================================
+function(add_obsforge_test_convobs_prepbufr target_prefix obs_type obs_source test_config mpi_count)
+
+    # bufr2netcdf
+    if(test_config STREQUAL "bufr2netcdf") 
+        set(target_name "${target_prefix}_${obs_type}_${test_config}")
+        set(env_args "")
+	if(obs_source STREQUAL "acft_profiles")
+            set(command_args
+                "${CMAKE_BINARY_DIR}/bin/bufr2netcdf.x testdata/gdas.t00z.prepbufr.${obs_source}
+                testinput/bufr_${obs_type}_mapping.yaml
+                testrun/${test_config}/gdas.t00z.${obs_type}.tm00.nc"
+                ${test_config}/gdas.t00z.${obs_type}.tm00.nc
+            )
+	else()
+            set(command_args
+                "${CMAKE_BINARY_DIR}/bin/bufr2netcdf.x testdata/gdas.t00z.prepbufr
+                testinput/bufr_${obs_type}_mapping.yaml
+                testrun/${test_config}/gdas.t00z.${obs_type}.tm00.nc"
+                ${test_config}/gdas.t00z.${obs_type}.tm00.nc
+            )
+        endif()
+        if(mpi_count GREATER 0)
+            set(target_name "${target_name}_mpi${mpi_count}")
+            # Add the test
+            ecbuild_add_test(
+                TARGET ${target_name}
+                MPI ${mpi_count}
+                TYPE SCRIPT
+                COMMAND bash
+                ARGS ${CMAKE_BINARY_DIR}/bin/bufr_comp.sh netcdf ${command_args}
+                ${env_args}
+            )
+        else()
+            # Add the test
+            ecbuild_add_test(
+                TARGET ${target_name}
+                TYPE SCRIPT
+                COMMAND bash
+                ARGS ${CMAKE_BINARY_DIR}/bin/bufr_comp.sh netcdf ${command_args}
+                ${env_args}
+            )
+        endif()
+
+    # script2netcdf
+    elseif(test_config STREQUAL "script2netcdf")
+        set(target_name "${target_prefix}_${obs_type}_${test_config}")
+        set(env_args "")
+        if(obs_source STREQUAL "acft_profiles")
+            set(command_args
+                "testinput/bufr_${obs_type}.py testdata/gdas.t00z.prepbufr.${obs_source}
+                testinput/bufr_${obs_type}_mapping.yaml
+                testrun/${test_config}/gdas.t00z.${obs_type}.tm00.nc
+		2021080100"
+                ${test_config}/gdas.t00z.${obs_type}.tm00.nc
+            )
+        else()
+            set(command_args
+                "testinput/bufr_${obs_type}.py testdata/gdas.t00z.prepbufr
+                testinput/bufr_${obs_type}_mapping.yaml
+                testrun/${test_config}/gdas.t00z.${obs_type}.tm00.nc
+		2021080100"
+                ${test_config}/gdas.t00z.${obs_type}.tm00.nc
+            )
+        endif()
+        set(env_args
+            "ENVIRONMENT PYTHONPATH=${CMAKE_BINARY_DIR}/lib/python${Python3_VERSION_MAJOR}.${Python3_VERSION_MINOR}/site-packages:$ENV{PYTHONPATH}"
+        )
+        if(mpi_count GREATER 0)
+            set(target_name "${target_name}_mpi${mpi_count}")
+            # Add the test
+            ecbuild_add_test(
+                TARGET ${target_name}
+                MPI ${mpi_count}
+                TYPE SCRIPT
+                COMMAND bash
+                ARGS ${CMAKE_BINARY_DIR}/bin/bufr_comp.sh netcdf ${command_args}
+                ${env_args}
+            )
+        else()
+            # Add the test
+            ecbuild_add_test(
+                TARGET ${target_name}
+                TYPE SCRIPT
+                COMMAND bash
+                ARGS ${CMAKE_BINARY_DIR}/bin/bufr_comp.sh netcdf ${command_args}
+                ${env_args}
+            )
+        endif()
+
+    # bufr4backend
+    elseif(test_config STREQUAL "bufr4backend")
+        set(target_name "${target_prefix}_${obs_type}_${test_config}")
+        set(env_args "")
+        if(mpi_count GREATER 0)
+            set(target_name "${target_name}_mpi${mpi_count}")
+            set(command_args
+                "${CMAKE_BINARY_DIR}/bin/time_IodaIO.x testinput/bufr_${test_config}_${obs_type}_mpi${mpi_count}.yaml"
+                ${test_config}/gdas.t00z.${obs_source}.tm00_mpi${mpi_count}.nc
+            )
+            # Add the test
+            ecbuild_add_test(
+                TARGET ${target_name}
+                MPI ${mpi_count}
+                TYPE SCRIPT
+                COMMAND bash
+                ARGS ${CMAKE_BINARY_DIR}/bin/bufr_comp.sh netcdf ${command_args}
+                ${env_args}
+            )
+        else()
+            set(command_args
+                "${CMAKE_BINARY_DIR}/bin/time_IodaIO.x testinput/bufr_${test_config}_${obs_type}.yaml"
+                ${test_config}/gdas.t00z.${obs_type}.tm00.nc
+            )
+            # Add the test
+            ecbuild_add_test(
+                TARGET ${target_name}
+                TYPE SCRIPT
+                COMMAND bash
+                ARGS ${CMAKE_BINARY_DIR}/bin/bufr_comp.sh netcdf ${command_args}
+                ${env_args}
+            )
+        endif()
+
+    # script4backend
+    elseif(test_config STREQUAL "script4backend")
+        set(target_name "${target_prefix}_${obs_type}_${test_config}")
+        set(env_args "")
+        if(mpi_count GREATER 0)
+            set(target_name "${target_name}_mpi${mpi_count}")
+            set(command_args
+                "${CMAKE_BINARY_DIR}/bin/time_IodaIO.x testinput/bufr_${test_config}_${obs_type}_mpi${mpi_count}.yaml"
+                ${test_config}/gdas.t00z.${obs_source}.tm00_mpi${mpi_count}.nc
+            )
+            # Add the test
+            ecbuild_add_test(
+                TARGET ${target_name}
+                MPI ${mpi_count}
+                TYPE SCRIPT
+                COMMAND bash
+                ARGS ${CMAKE_BINARY_DIR}/bin/bufr_comp.sh netcdf ${command_args}
+                ${env_args}
+            )
+        else()
+            set(command_args
+                "${CMAKE_BINARY_DIR}/bin/time_IodaIO.x testinput/bufr_${test_config}_${obs_type}.yaml"
+                ${test_config}/gdas.t00z.${obs_source}.tm00.nc
+            )
+            # Add the test
+            ecbuild_add_test(
+                TARGET ${target_name}
+                TYPE SCRIPT
+                COMMAND bash
+                ARGS ${CMAKE_BINARY_DIR}/bin/bufr_comp.sh netcdf ${command_args}
+                ${env_args}
+            )
+        endif()
+
+    else()
+	    message(Status "Unknown test configuration")
+    endif()
+
+endfunction()
+
 # ===============================================
 # Set test parameters for satellite observations
 # ===============================================
@@ -339,7 +505,7 @@ endforeach()
 # ==================================================================
 # Set test parameters for conventional observations from bufr dump
 # ==================================================================
-set(convobs_types "sfcsno")
+set(convobs_types "sfcsno" )
 
 # Get the length of the convobs_types list
 list(LENGTH convobs_types convobs_types_length)
@@ -350,13 +516,40 @@ math(EXPR convobs_types_last_index "${convobs_types_length} - 1")
 # =========================================================
 foreach(index RANGE 0 ${convobs_types_last_index})
     list(GET convobs_types ${index} convobs_type)
-    
-    foreach(convobs_type ${convobs_types})
-        set(obs_source ${convobs_type})
-	foreach(test_config ${test_configs})
-	    foreach(mpi_count ${mpi_counts_convobs})
-                add_obsforge_test_convobs("test_obsforge_convobs" ${convobs_type} ${obs_source} ${test_config} ${mpi_count})
-            endforeach()
+
+    set(obs_source ${convobs_type})
+    foreach(test_config ${test_configs})
+        foreach(mpi_count ${mpi_counts_convobs})
+            add_obsforge_test_convobs("test_obsforge_convobs" ${convobs_type} ${obs_source} ${test_config} ${mpi_count})
+        endforeach()
+    endforeach()
+endforeach()
+
+
+# ==================================================================
+# Set test parameters for conventional observations from prepbufr 
+# ==================================================================
+set(convobs_prepbufr_types "adpsfc_prepbufr" "sfcshp_prepbufr" "acft_profiles_prepbufr" "adpupa_prepbufr")
+set(mpi_counts_convobs_prepbufr "0" "4")
+
+# Get the length of the convobs_prepbufr_types list
+list(LENGTH convobs_prepbufr_types convobs_prepbufr_types_length)
+math(EXPR convobs_prepbufr_types_last_index "${convobs_prepbufr_types_length} - 1")
+
+# =================================================================
+# Generate tests for conventional prepbufr observations dynamically
+# =================================================================
+foreach(index RANGE 0 ${convobs_prepbufr_types_last_index})
+    list(GET convobs_prepbufr_types ${index} convobs_prepbufr_type)
+
+    # Extract components from convobs_prepbufr_type
+    string(REPLACE "_prepbufr" ";prepbufr" convobs_prepbufr_type_parts "${convobs_prepbufr_type}")
+    list(GET convobs_prepbufr_type_parts 0 obs_source)
+
+    set(obs_source ${convobs_prepbufr_type})
+    foreach(test_config ${test_configs})
+        foreach(mpi_count ${mpi_counts_convobs_prepbufr})
+            add_obsforge_test_convobs_prepbufr("test_obsforge_convobs_prepbufr" ${convobs_prepbufr_type} ${obs_source} ${test_config} ${mpi_count})
         endforeach()
     endforeach()
 endforeach()
@@ -374,6 +567,7 @@ endforeach()
 set(obs_types "")
 set(obs_types ${satobs_types})
 list(APPEND obs_types ${convobs_types})
+list(APPEND obs_types ${convobs_prepbufr_types})
 
 # Create directories and subdirectories
 file(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/testinput)
@@ -426,6 +620,21 @@ foreach (test_config ${test_configs})
     endforeach()
 endforeach()
 
+foreach (test_config ${test_configs})
+    foreach (obs_type ${convobs_prepbufr_types})
+        list(APPEND test_input_configs
+            "bufr_${test_config}_${obs_type}.yaml"
+        )
+        foreach (mpi_count ${mpi_counts_convobs_prepbufr})
+            if(mpi_count GREATER 0)
+                list(APPEND test_input_configs
+                    "bufr_${test_config}_${obs_type}_mpi${mpi_count}.yaml"
+                )
+            endif()
+        endforeach()
+    endforeach()
+endforeach()
+
 # Create symlinks for input mapping files and Python scripts
 foreach(file ${test_input_files})
     execute_process(
diff --git a/test/testinput/bufr_bufr4backend_acft_profiles_prepbufr.yaml b/test/testinput/bufr_bufr4backend_acft_profiles_prepbufr.yaml
new file mode 100644
index 00000000..d5a84b0d
--- /dev/null
+++ b/test/testinput/bufr_bufr4backend_acft_profiles_prepbufr.yaml
@@ -0,0 +1,18 @@
+time window:
+  begin: "2021-07-31T21:00:00Z"
+  end: "2021-08-01T03:00:00Z"
+  bound to include: begin
+
+observations:
+- obs space:
+    name: "AIRCFT"
+    simulated variables: ['airTemperature','specificHumidity','windNorthward','windEastward']
+    obsdatain:
+      engine:
+        type: bufr
+        obsfile: "./testdata/gdas.t00z.prepbufr.acft_profiles"
+        mapping file: "./testinput/bufr_acft_profiles_prepbufr_mapping.yaml"
+    obsdataout:
+      engine:
+        type: H5File
+        obsfile: "./testrun/bufr4backend/gdas.t00z.acft_profiles_prepbufr.tm00.nc"
diff --git a/test/testinput/bufr_bufr4backend_acft_profiles_prepbufr_mpi4.yaml b/test/testinput/bufr_bufr4backend_acft_profiles_prepbufr_mpi4.yaml
new file mode 100644
index 00000000..68176a1a
--- /dev/null
+++ b/test/testinput/bufr_bufr4backend_acft_profiles_prepbufr_mpi4.yaml
@@ -0,0 +1,18 @@
+time window:
+  begin: "2021-07-31T21:00:00Z"
+  end: "2021-08-01T03:00:00Z"
+  bound to include: begin
+
+observations:
+- obs space:
+    name: "AIRCFT"
+    simulated variables: ['airTemperature','specificHumidity','windNorthward','windEastward']
+    obsdatain:
+      engine:
+        type: bufr
+        obsfile: "./testdata/gdas.t00z.prepbufr.acft_profiles"
+        mapping file: "./testinput/bufr_acft_profiles_prepbufr_mapping.yaml"
+    obsdataout:
+      engine:
+        type: H5File
+        obsfile: "./testrun/bufr4backend/gdas.t00z.acft_profiles_prepbufr.tm00_mpi4.nc"
diff --git a/test/testinput/bufr_bufr4backend_adpsfc_prepbufr.yaml b/test/testinput/bufr_bufr4backend_adpsfc_prepbufr.yaml
new file mode 100644
index 00000000..f006a9be
--- /dev/null
+++ b/test/testinput/bufr_bufr4backend_adpsfc_prepbufr.yaml
@@ -0,0 +1,19 @@
+time window:
+  begin: "2021-07-31T21:00:00Z"
+  end: "2021-08-01T03:00:00Z"
+  bound to include: begin
+
+observations:
+- obs space:
+    name: "ADPSFC"
+    simulated variables: ['stationElevation','stationPressure']
+    obsdatain:
+      engine:
+        type: bufr
+        obsfile: "./testdata/gdas.t00z.prepbufr"
+        mapping file: "./testinput/bufr_adpsfc_prepbufr_mapping.yaml"
+        #    category: ["goes-16"]
+    obsdataout:
+      engine:
+        type: H5File
+        obsfile: "./testrun/bufr4backend/gdas.t00z.adpsfc_prepbufr.tm00.nc"
diff --git a/test/testinput/bufr_bufr4backend_adpsfc_prepbufr_mpi4.yaml b/test/testinput/bufr_bufr4backend_adpsfc_prepbufr_mpi4.yaml
new file mode 100644
index 00000000..1fb239ee
--- /dev/null
+++ b/test/testinput/bufr_bufr4backend_adpsfc_prepbufr_mpi4.yaml
@@ -0,0 +1,19 @@
+time window:
+  begin: "2021-07-31T21:00:00Z"
+  end: "2021-08-01T03:00:00Z"
+  bound to include: begin
+
+observations:
+- obs space:
+    name: "ADPSFC"
+    simulated variables: ['stationElevation','stationPressure']
+    obsdatain:
+      engine:
+        type: bufr
+        obsfile: "./testdata/gdas.t00z.prepbufr"
+        mapping file: "./testinput/bufr_adpsfc_prepbufr_mapping.yaml"
+        #    category: ["goes-16"]
+    obsdataout:
+      engine:
+        type: H5File
+        obsfile: "./testrun/bufr4backend/gdas.t00z.adpsfc_prepbufr.tm00_mpi4.nc"
diff --git a/test/testinput/bufr_bufr4backend_sfcshp_prepbufr.yaml b/test/testinput/bufr_bufr4backend_sfcshp_prepbufr.yaml
new file mode 100644
index 00000000..9762f51a
--- /dev/null
+++ b/test/testinput/bufr_bufr4backend_sfcshp_prepbufr.yaml
@@ -0,0 +1,18 @@
+time window:
+  begin: "2021-07-31T21:00:00Z"
+  end: "2021-08-01T03:00:00Z"
+  bound to include: begin
+
+observations:
+- obs space:
+    name: "SFCSHP"
+    simulated variables: ['stationPressure','airTemperature','virtualTemperature','specificHumidity','windNorthward','windEastward']
+    obsdatain:
+      engine:
+        type: bufr
+        obsfile: "./testdata/gdas.t00z.prepbufr"
+        mapping file: "./testinput/bufr_sfcshp_prepbufr_mapping.yaml"
+    obsdataout:
+      engine:
+        type: H5File
+        obsfile: "./testrun/bufr4backend/gdas.t00z.sfcshp_prepbufr.tm00.nc"
diff --git a/test/testinput/bufr_bufr4backend_sfcshp_prepbufr_mpi4.yaml b/test/testinput/bufr_bufr4backend_sfcshp_prepbufr_mpi4.yaml
new file mode 100644
index 00000000..c424e889
--- /dev/null
+++ b/test/testinput/bufr_bufr4backend_sfcshp_prepbufr_mpi4.yaml
@@ -0,0 +1,18 @@
+time window:
+  begin: "2021-07-31T21:00:00Z"
+  end: "2021-08-01T03:00:00Z"
+  bound to include: begin
+
+observations:
+- obs space:
+    name: "SFCSHP"
+    simulated variables: ['stationPressure','airTemperature','virtualTemperature','specificHumidity','windNorthward','windEastward']
+    obsdatain:
+      engine:
+        type: bufr
+        obsfile: "./testdata/gdas.t00z.prepbufr"
+        mapping file: "./testinput/bufr_sfcshp_prepbufr_mapping.yaml"
+    obsdataout:
+      engine:
+        type: H5File
+        obsfile: "./testrun/bufr4backend/gdas.t00z.sfcshp_prepbufr.tm00_mpi4.nc"
diff --git a/test/testinput/bufr_script4backend_acft_profiles_prepbufr.yaml b/test/testinput/bufr_script4backend_acft_profiles_prepbufr.yaml
new file mode 100644
index 00000000..a7cc1cb3
--- /dev/null
+++ b/test/testinput/bufr_script4backend_acft_profiles_prepbufr.yaml
@@ -0,0 +1,23 @@
+time window:
+  begin: "2021-07-31T21:00:00Z"
+  end: "2021-08-01T03:00:00Z"
+  bound to include: begin
+
+observations:
+- obs space:
+    name: "AIRCFT"
+    observed variables:  ['airTemperature','specificHumidity','windNorthward','windEastward']
+    derived variables: ['airTemperature','specificHumidity','windNorthward','windEastward']
+    simulated variables: ['airTemperature','specificHumidity','windNorthward','windEastward']
+    obsdatain:
+      engine:
+        type: script
+        script file: "./testinput/bufr_acft_profiles_prepbufr.py"
+        args:
+          input_path: "./testdata/gdas.t00z.prepbufr.acft_profiles"
+          mapping_path: "./testinput/bufr_acft_profiles_prepbufr_mapping.yaml"
+          cycle_time: "2021080100"
+    obsdataout:
+      engine:
+        type: H5File
+        obsfile: "./testrun/script4backend/gdas.t00z.acft_profiles_prepbufr.tm00.nc"
diff --git a/test/testinput/bufr_script4backend_acft_profiles_prepbufr_mpi4.yaml b/test/testinput/bufr_script4backend_acft_profiles_prepbufr_mpi4.yaml
new file mode 100644
index 00000000..2e63f2e4
--- /dev/null
+++ b/test/testinput/bufr_script4backend_acft_profiles_prepbufr_mpi4.yaml
@@ -0,0 +1,23 @@
+time window:
+  begin: "2021-07-31T21:00:00Z"
+  end: "2021-08-01T03:00:00Z"
+  bound to include: begin
+
+observations:
+- obs space:
+    name: "AIRCFT"
+    observed variables:  ['airTemperature','specificHumidity','windNorthward','windEastward']
+    derived variables: ['airTemperature','specificHumidity','windNorthward','windEastward']
+    simulated variables: ['airTemperature','specificHumidity','windNorthward','windEastward']
+    obsdatain:
+      engine:
+        type: script
+        script file: "./testinput/bufr_acft_profiles_prepbufr.py"
+        args:
+          input_path: "./testdata/gdas.t00z.prepbufr.acft_profiles"
+          mapping_path: "./testinput/bufr_acft_profiles_prepbufr_mapping.yaml"
+          cycle_time: "2021080100"
+    obsdataout:
+      engine:
+        type: H5File
+        obsfile: "./testrun/script4backend/gdas.t00z.acft_profiles_prepbufr.tm00_mpi4.nc"
diff --git a/test/testinput/bufr_script4backend_adpsfc_prepbufr.yaml b/test/testinput/bufr_script4backend_adpsfc_prepbufr.yaml
new file mode 100644
index 00000000..581aac32
--- /dev/null
+++ b/test/testinput/bufr_script4backend_adpsfc_prepbufr.yaml
@@ -0,0 +1,23 @@
+time window:
+  begin: "2021-07-31T21:00:00Z"
+  end: "2021-08-01T03:00:00Z"
+  bound to include: begin
+
+observations:
+- obs space:
+    name: "ADPSFC"
+    observed variables: ['stationElevation','stationPressure']
+    derived variables: ['stationElevation','stationPressure']
+    simulated variables: ['stationElevation','stationPressure']
+    obsdatain:
+      engine:
+        type: script
+        script file: "./testinput/bufr_adpsfc_prepbufr.py"
+        args:
+          input_path: "./testdata/gdas.t00z.prepbufr"
+          mapping_path: "./testinput/bufr_adpsfc_prepbufr_mapping.yaml"
+          cycle_time: "2021080100"
+    obsdataout:
+      engine:
+        type: H5File
+        obsfile: "./testrun/script4backend/gdas.t00z.adpsfc_prepbufr.tm00.nc"
diff --git a/test/testinput/bufr_script4backend_adpsfc_prepbufr_mpi4.yaml b/test/testinput/bufr_script4backend_adpsfc_prepbufr_mpi4.yaml
new file mode 100644
index 00000000..a4d9e561
--- /dev/null
+++ b/test/testinput/bufr_script4backend_adpsfc_prepbufr_mpi4.yaml
@@ -0,0 +1,23 @@
+time window:
+  begin: "2021-07-31T21:00:00Z"
+  end: "2021-08-01T03:00:00Z"
+  bound to include: begin
+
+observations:
+- obs space:
+    name: "ADPSFC"
+    observed variables: ['stationElevation','stationPressure']
+    derived variables: ['stationElevation','stationPressure']
+    simulated variables: ['stationElevation','stationPressure']
+    obsdatain:
+      engine:
+        type: script
+        script file: "./testinput/bufr_adpsfc_prepbufr.py"
+        args:
+          input_path: "./testdata/gdas.t00z.prepbufr"
+          mapping_path: "./testinput/bufr_adpsfc_prepbufr_mapping.yaml"
+          cycle_time: "2021080100"
+    obsdataout:
+      engine:
+        type: H5File
+        obsfile: "./testrun/script4backend/gdas.t00z.adpsfc_prepbufr.tm00_mpi4.nc"
diff --git a/test/testinput/bufr_script4backend_sfcshp_prepbufr.yaml b/test/testinput/bufr_script4backend_sfcshp_prepbufr.yaml
new file mode 100644
index 00000000..96c3f84b
--- /dev/null
+++ b/test/testinput/bufr_script4backend_sfcshp_prepbufr.yaml
@@ -0,0 +1,23 @@
+time window:
+  begin: "2021-07-31T21:00:00Z"
+  end: "2021-08-01T03:00:00Z"
+  bound to include: begin
+
+observations:
+- obs space:
+    name: "SFCSHP"
+    observed variables:  ['stationPressure','airTemperature','virtualTemperature','specificHumidity','windNorthward','windEastward']
+    derived variables: ['stationPressure','airTemperature','virtualTemperature','specificHumidity','windNorthward','windEastward']
+    simulated variables:  ['stationPressure','airTemperature','virtualTemperature','specificHumidity','windNorthward','windEastward']
+    obsdatain:
+      engine:
+        type: script
+        script file: "./testinput/bufr_sfcshp_prepbufr.py"
+        args:
+          input_path: "./testdata/gdas.t00z.prepbufr"
+          mapping_path: "./testinput/bufr_sfcshp_prepbufr_mapping.yaml"
+          cycle_time: "2021080100"
+    obsdataout:
+      engine:
+        type: H5File
+        obsfile: "./testrun/script4backend/gdas.t00z.sfcshp_prepbufr.tm00.nc"
diff --git a/test/testinput/bufr_script4backend_sfcshp_prepbufr_mpi4.yaml b/test/testinput/bufr_script4backend_sfcshp_prepbufr_mpi4.yaml
new file mode 100644
index 00000000..18e63a9a
--- /dev/null
+++ b/test/testinput/bufr_script4backend_sfcshp_prepbufr_mpi4.yaml
@@ -0,0 +1,23 @@
+time window:
+  begin: "2021-07-31T21:00:00Z"
+  end: "2021-08-01T03:00:00Z"
+  bound to include: begin
+
+observations:
+- obs space:
+    name: "SFCSHP"
+    observed variables:  ['stationPressure','airTemperature','virtualTemperature','specificHumidity','windNorthward','windEastward']
+    derived variables: ['stationPressure','airTemperature','virtualTemperature','specificHumidity','windNorthward','windEastward']
+    simulated variables:  ['stationPressure','airTemperature','virtualTemperature','specificHumidity','windNorthward','windEastward']
+    obsdatain:
+      engine:
+        type: script
+        script file: "./testinput/bufr_sfcshp_prepbufr.py"
+        args:
+          input_path: "./testdata/gdas.t00z.prepbufr"
+          mapping_path: "./testinput/bufr_sfcshp_prepbufr_mapping.yaml"
+          cycle_time: "2021080100"
+    obsdataout:
+      engine:
+        type: H5File
+        obsfile: "./testrun/script4backend/gdas.t00z.sfcshp_prepbufr.tm00_mpi4.nc"