Hi Oscar,
SOAP adapter by default disable the system acknowledgments from PI 7.31 SP08, refer sap note1821649 - XMBWS.GenerateSysAck is set to false by default.
So we need to enable system acknowledgements by setting below parameter in SOAP adapter:
Q: How to set System Acknowledgment parameter in soap adapter ?
A: In the note 1821649, default value of the parameter is set to false. Which means that in case the acknowledgement is required to be generated the parameter has to be explicitly set to true in the channel configuration. So note 1821649 is the relevant note for this issue.
Parameter Name : XMBWS.GenerateSysAck
Parameter Value : true
Regards,
Praveen.