Triggering workflow on successful idoc posting

Hi All,

There is a requirement in which I need to trigger a custom workflow for sending mail when idoc is successfully posted with status 53. The idoc is CREMAS(CREMAS03).

i did all the config and idoc is getting posted successfully.

I did following config for triggering workflow:

1. In WE57 I assigned BO IDOCCREDITOR.

2.In BD67 I assigned BO type, start event as INPUTSUCCESS and End event as Success Event.

Burt as soon as I assign Business object in WE57 idoc starts giving error as below:

"Function module not allowed: Z_IDOC_INPUT_CREDITOR"

When i remove business object from WE57, it starts posting.

Please let me know how to trigger an event on successful posting???

Thanks and Regards,

Vivek Gupta