How To Fix /IWXBE/CORE315 - OAuth client id '&1' does not contain communication partner id '&2'

/IWXBE/CORE315 - Overview

• Message type: E = Error

• Message class: /IWXBE/CORE -

• Message number: 315

• Message text: OAuth client id '&1' does not contain communication partner id '&2'

Self-Explanatory Message

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/IWXBE/CORE315 - Details

• The SAP error message /IWXBE/CORE315 indicates an issue with the OAuth client configuration in the context of communication between systems. Specifically, it suggests that the OAuth client ID being used does not match the expected communication partner ID. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause
  
  Misconfiguration: The OAuth client ID (&1) is not correctly configured to correspond with the communication partner ID (&2). This can happen if the OAuth client was set up incorrectly or if there are discrepancies in the configuration settings.
  Incorrect Mapping: The system may be trying to use an OAuth client that is not authorized or mapped to the intended communication partner.
  Changes in Configuration: If there have been recent changes to the OAuth client or communication partner settings, it may lead to this error if the changes were not properly synchronized.
  
  Solution
  
  
  Check OAuth Client Configuration:
  
  Go to the SAP system where the OAuth client is configured.
  Verify