Production Connector -- Dispatch Message Error - Exception during the start of the destination

[MaxSte]

Hi Experts,

at the moment we are facing a problem where we cannot make any progress with the given logs and error messages.

Any hint as to whether it is a certificate problem, a Cloud Connector problem or whether there are additional ways of isolating the error will help us.

Process setup

OPC-UA as a shopfloor system sends an indicator to the DM.
In the DM there is an Automatic Trigger Subscription with an assigned PPD, which waits for changes to the indicator.
When the indicator is changed in the OPC server, the subscription is already called and stored as a message in the correct agent instance of the Production Connector.
However, the agent instance then has a problem when calling the PPD towards the DM.

• The connections in “Configure Production Connectivity” are already maintained and have the status running
• We double checked the BTP Destination SAP_DMC_DEFAULT_SERVICE_KEY
• We worked through Troubleshooting - Configure Production Connectivity App | SAP Help Portal
• We have looked at the Production Connector logs (no further indications of a connection error, only information entries)

Our current state of knowledge

Certificate from the Production Connector in the DM compared to the automatically generated client proxy to the PPD

User Settings in Production Connector Config

Message in the agent instance from the subscription that cannot be sent to the PPD destination.

Best regards

[MaxSte · Accepted solution]

To conclude the article. In the end, it was due to a firewall setting in the customer's network.