3593504 - Proxy error SoapFaultCode:5 An internal error occurred during (/AIF/MES091)

When submitting or displaying an eDocument in the edoc_cockpit, one of the following errors occurs:

• Proxy error SoapFaultCode:5 An internal error occurred during (/AIF/MES091)
• Proxy error SoapFaultCode:5 An internal error occurred during: message processing. For error details check the System Logs Monitor in http://(...)
• Proxy-Fehler SoapFaultCode:5 and Meldungsnr. /AIF/MES091
• Proxy error SoapFaultCode:3 An internal error occurred. For error details check MPL ID

• SAP ERP

• SAP S/4HANA

• SAP Document and Reporting Compliance, Cloud Edition

• Peppol Exchange integration

Proxy error SoapFaultCode, SOAMANAGER, electronic, document, PEPPOL , eDocument, AIF/MES091, Certificate, receiverId  , KBA , CA-GTF-CSC-EDO-PAP , Document Compliance Peppol Exchange Service , CA-GTF-CSC-EDO , Electronic Document Processing Framework , CA-GTF-CSC-EDO-DE , Germany , Problem