Message "&1{&2}" not supported (interface: "&3" binding key: "&4")

What causes this issue?

The SOAP Processor was invoked to process a message, which is not
supported by the interface.

System Response

The SOAP Processor could not find an operation on that interface, which
can process the message. The processing was terminated due to this.

How to fix this error?

This error could be caused by an invalid Web Service endpoint
configuration on provider side or an incompatible SOAP request send by
the Web Service consumer.
In case of the invalid Web Service endpoint configuration, please follow
the instructions of the Implementation Guide of the Web Service Provider
application in order to refresh the Web Service endpoint configuration.
In case of an incompatible SOAP requests send by the Web Service
consumer, please adapt that consumer application in order to avoid
sending incompatible SOAP requests.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.