diff --git a/addons/stock/i18n/es.po b/addons/stock/i18n/es.po
index 4be6a9cf8538f..db318567cb036 100644
--- a/addons/stock/i18n/es.po
+++ b/addons/stock/i18n/es.po
@@ -2836,13 +2836,10 @@ msgstr ""
 "No es posible reservar más productos que los %s que tiene en existencias."
 
 #. module: stock
-#: code:addons/stock/models/stock_quant.py:266
+#: code:addons/stock/models/stock_quant.py:273
 #, python-format
-msgid ""
-"It is not possible to unreserve more products of %s than you have in stock."
-msgstr ""
-"No es posible deshacer la reserva de más productos que los %s que tiene en "
-"existencias."
+msgid "It is not possible to unreserve more products of %s than you have in stock. Available quantity: %s, quantity: %s"
+msgstr "No es posible deshacer la reserva de más productos que los %s que tiene en existencias. Cantidad disponible: %s, cantidad: %s"
 
 #. module: stock
 #: model:ir.model.fields,help:stock.field_stock_move__product_packaging
diff --git a/addons/stock/models/stock_quant.py b/addons/stock/models/stock_quant.py
index f7f093ad50b67..177c8fb52e7da 100644
--- a/addons/stock/models/stock_quant.py
+++ b/addons/stock/models/stock_quant.py
@@ -270,7 +270,9 @@ def _update_reserved_quantity(self, product_id, location_id, quantity, lot_id=No
             # if we want to unreserve
             available_quantity = sum(quants.mapped('reserved_quantity'))
             if float_compare(abs(quantity), available_quantity, precision_rounding=rounding) > 0:
-                raise UserError(_('It is not possible to unreserve more products of %s than you have in stock.') % product_id.display_name)
+                msg = _("It is not possible to unreserve more products of %s than you have in stock."
+                        " Available quantity: %s, quantity: %s") % (product_id.display_name, available_quantity, quantity)
+                raise UserError(msg)
         else:
             return reserved_quants