HTTP Web Server: Lotus Notes Exception - Field name requires a value

We have one web based application which was working fine till last week. Last week document is not getting saved on particular status. It is giving HTTP 500 - The website can not display page error on browser and following error in server log - HTTP Web Server: Lotus Notes Exception - Field name requires a value.

I have set up application in test environment with same design and same keyword documents but not able to reproduce the error.

I will appreciate your expert comments on this asap. Thanks for help!!!

Subject: Check field at the script

Check your field name on the script… Maybe you forgot to put quotes (“”) in it.