I can also see the below mentioned message for error that can be seen in Process Communication Error view:
Use this solution if you have to make changes to your system to enable the processing of a business document that you have received via a third party interface.
1) Check the details of the error message on the Process Communication Error screen.
2) Adjust the data in your system (for example, master data or business configuration data), or edit the payload (if allowed) on the Process Communication Screen as required.
3) Restart the process communication by clicking Restart Process on the Process Communication Error screen.
Error Message seen in Process Communication Error view is as below:
An error occurred:
Error while processing inbound third party communication
Execute the task and follow the solution proposal to solve the error.
Hope this can give some idea about the issue.
Regards,
Chandan