diff --git a/modules/entry/back/models/entry.json b/modules/entry/back/models/entry.json
index 833edf14d..383585fce 100644
--- a/modules/entry/back/models/entry.json
+++ b/modules/entry/back/models/entry.json
@@ -74,6 +74,9 @@
         },
         "observationEditorFk": {
             "type": "number"
+        },
+        "invoiceAmount": {
+            "type": "number"
         }
     },
     "relations": {
@@ -108,4 +111,4 @@
             "foreignKey": "typeFk"
         }
     }
-}
\ No newline at end of file
+}