ManageExternalAggregatedCustomerSalesOrderViewIn - ECC to C4C Interface - Error delivering message to C4C

Hi Experts,

I have created an interface from ECC to C4C for message 'ManageExternalAggregatedCustomerSalesOrderViewIn'.

This is going via PI/PO (single stack).

Since this is a first interface for the message 'ManageExternalAggregatedCustomerSalesOrderViewIn' so we do not have any sample payloads for it except the one that is sent from ECC or what I found in various discussions and sap documentation.

I've referred various threads and discussions and implemented everything they said like "check the box of Use Query String and Header Encryption", "Add '?MessageId' at the end of URL", etc. But I am still getting the error mentioned below. I request you to please help me out in this regard.

Error in PO:

Error in C4C:

Sample Payload:

Regards,

Arkesh