How To Fix SRT_CORE206 - Unequal number of messages and bgRFC units

SAP Error Message - Details

• Message type: E = Error

• Message class: SRT_CORE - Nachrichtenklasse für SOAP Runtime

• Message number: 206

• Message text: Unequal number of messages and bgRFC units

What causes this issue?

In some releases without a necessary Support Package there was no
relation between a Web Service message and the bgRFC unit ID. Therefore,
it is not available to determine which message is belonging to which
bgRFC unit.
For these "old" messages only a check of number of bgRFC units and
according messages stored as incomplete in XI persistency is necessary.
This kind of checks can only be doen on the provider side because on
consumer side a bgRFC unit can contain more than one Web Service
message.
This check is now failed for the current message.
This might happen if the bgRFC queue is deleted manually from within the
bgRFC Monitor. Therefore, never delete a bgRFC unit or queue from within
bgRFC Monitor.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

All messages of the current sequence and bgRFC queue are now in an
inconsistent state and it is not clear whether some of them are already
delivered.
Following steps are necessary to clean up this situation:
Look at the message payload by clicking the "Message State" to run the
XI Message Monitor.
Based on the payload contact the responsible Web Service application and
ask for checking whether you can terminate the whole sequence and if
necessary delete all units of the affected bgRFC queue by using the
Sequence Monitor and the bgRFC Monitor.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.