PREQCR1 Message type for PR Creation

Hi All,

Can i use PREQCR1 message type (with IDoc type PREQCR101) to create an inbound PR.

I tried using BAPI as the process code and the FM is BAPI_IDOC_INPUT1. But the system is throwing the error

Function module not allowed: BAPI_IDOC_INPUT1

Please let me know, if i used the correct process code. I specifically want to use only PREQCR1 message type.

Thanks,

Satya