BAPI for Idoc message Type WHSCON

Hi experts,

I'm trying to use the IDoc basic type DELVRY03 with message types WHSCON. But when i execute the Idoc, i get the message error: Function module not allowed: BAPI_IDOC_INPUT1.

I think that the error ocurrs because i created in wrong way the partner profile for message type WHSCON in transaction WE20.

Which is the correct way or correct configuration to define and execute the IDoc DELVRY03?

I am using SAP Version ECC6.0.

Thanks in advance.

Alejandro