Error 403 in SM59 - SAP DM Integration with SAP ERP

[BogdanB]

Dear experts,

After following and implementing the SAP DM Integration Guide-Steps (scenario: Integration with SAP ERP), I have encountered some problems:

1. SSL-Certificate issue - SSSLERR_PEER_CERT_UNTRUSTED

Solution was provided in many other topics and the issue was solved:

https://me.sap.com/notes/0002461900

https://me.sap.com/notes/0002333326 (Solution)

https://answers.sap.com/questions/13020758/backend-ecc-connection-to-cpi.html

2. Transaction SM59 - HTTP-Response Status=403 for the HTTP Connection to External Server (Type=G)

Solution was also provided in many other topics, but the issue still remained:

https://me.sap.com/notes/0002613693

https://me.sap.com/notes/0002354728

https://blogs.sap.com/2020/07/15/sap-s4h-idoc-to-sap-cpi-inbound-idoc-interface/

The SSL-Certificates were uploaded in SAP ERP in STRUST and SAP CPI in Keystore (Manage Security)

The formats of the SSL-Certificates was base-64 encoded X.509 (.cer).

The logon&security and technical security were also checked and they are alright. Also in SAP BTP/SAP CPI I have re-checked every step, without finding any issue.

Any hints / solutions where I can re-check?

PS: Could it be that the problem is actually in the uploaded SSL-Certificates, since I had this problem from the beginning? Should the SSL certificates from SAP CPI also be uploaded in SAP ERP? (as per post: https://blogs.sap.com/2020/07/15/sap-s4h-idoc-to-sap-cpi-inbound-idoc-interface/)?

Thank you in advance!

Best regards,

Bogdan

[turkaj · Accepted solution]

Hi Bogdan,

In which folder in transaction STRUST did you upload the certificate?

After you uploaded the certificates in SAP ERP, did you invalidate the server cache (TA: SMICM -> HTTP Plug-In -> Server-Cache -> Invalidate Locally or Globally)

Did you also check if you get more information about your error message in TA: SMICM -> Trace File -> Display All

You can still check this to rule out errors in the ERP system.

What is your exact error message? Do you have any more information here?

Regards
Jim