diff --git a/entity/Order_entity/entityfields/contact_id/onValueChange.js b/entity/Order_entity/entityfields/contact_id/onValueChange.js
index f9eb528b6dc9d3dbd8d3a99ccaee424ebba0d4d7..aa1440b0c12d9fc36ffdc955b9ba879933b416b4 100644
--- a/entity/Order_entity/entityfields/contact_id/onValueChange.js
+++ b/entity/Order_entity/entityfields/contact_id/onValueChange.js
@@ -55,4 +55,8 @@ if(contactId != "")
     {
         neon.setFieldValue("$field.OBJECT_ROWID", salesProjectId);
     }
+    else
+    {
+        neon.setFieldValue("$field.OBJECT_ROWID", "");
+    }
 }
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