3756916 - Business partner soap replication '/cmdbp-bp_out-00002' fails with 'payload too large' (http 413), SAP S/4HANA Cloud Public Edition

• Business Partner replication fails for multiple records during outbound replication via interface /CMDBP-BP_OUT-00002.
• Error in logs: SRT: Unsupported xstream found: ("HTTP Code 413 : Payload Too Large").

S/4HANA Cloud Public Edition

1. Create a communication arrangement linked to a communication system (authorized and connected).
2. Launch initial outbound replication for a large Business Partner set using Replicate by Replication Model.
3. Wait until outbound messages are generated.
4. Open Message Monitoring and Message Dashboard apps.
5. Filter for interface/message type /CMDBP-BP_OUT-00002 with Status = Error and the relevant time range.
6. Review outbound messages.
7. Observe that messages are sent in batches; some fail with “Payload Too Large” while others succeed.

• The receiver web service returns HTTP 413 when the serialized SOAP request (including envelope, headers, and body) exceeds its maximum allowed payload size.
• Initial Business Partner SOAP replication groups up to 50 Business Partners per message in Public Cloud; this value is fixed and not configurable.
• Messages with complex Business Partners (for example, many relationships/sales areas) can push the total HTTP payload beyond the receiver’s size limit, causing intermittent failures in the same run.

Engage the target web service owner to increase the maximum allowed HTTP request size so typical Business Partner bulk messages can be accepted.

Note: In Public Cloud, there is no SSCUI to change the Business Partner SOAP package size; it is fixed to 50 and cannot be lowered.

• Refer to: HTTP 413 Payload Too Large (RFC 7231 section 6.5.11)
• Refer to: 2322379 - ESI - How to create a payload trace from transaction SRT_UTIL
• Refer to: 3245240 - Filters for Business Partner (SAP_COM_0008) SOAP Replication Not Taking Effect

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