FM SO_NEW_DOCUMENT_ATT_SEND_API1 mail problem

Hi All,

In one of a workflow for PPM , I am using this Function module to send email. But this FM is getting dumped and no information received by the WF and hence it remains in process.

The dump details are as follows:

Short text of error message:

COMMIT WORK during ON COMMIT or ON ROLLBACK

Calls trace

  33 METHOD       CL_DPR_TRANSACTION_MANAGER====CP    CL_DPR_TRANSACTION_MANAGER====CM009    18

     CL_DPR_TRANSACTION_MANAGER=>ON_TRANSACTION_FINISHED

  32 METHOD       CL_SYSTEM_TRANSACTION_STATE===CP    CL_SYSTEM_TRANSACTION_STATE===CM001     2

     CL_SYSTEM_TRANSACTION_STATE=>RAISE_TRANSACTION_FINISHED

  31 FORM         SAPMSSY0                            SAPMSSY0                              464

     %_AFTER_COMMIT

  30 FUNCTION     SAPLSOI1                            LSOI1U32                              172

     SO_DOCUMENT_SEND_API1

29 FUNCTION     SAPLSOI1                            LSOI1U25                               30

     SO_NEW_DOCUMENT_ATT_SEND_API1

Any Helps !

Thanks