idoc not Updating for message type ORDRCHG for PO changes

Hi everyone,

I am currently facing an issue of idoc not updating for message type ORDRCHG when there are any changes in the Purchase Orders in SAP ECC (RP2) system. I am sending PO from ECC to SRM system.

Although the schedule gets updated in the Scheduling Agreement (SA) when DELINS message type is triggered from ECC system and the same gets update on SRM system. Where as if there is any change in PO (eg PO price ammendment / deletion block / release block ) these are not getting updated on SRM system.