How To Fix SRT_WSP661 - Invalid method call for service group "&1" (see long text)

SAP Error Message - Details

• Message type: E = Error

• Message class: SRT_WSP - Messages for SRT WSP

• Message number: 661

• Message text: Invalid method call for service group "&1" (see long text)

What causes this issue?

The method for determining the logical port is not supported for this
consumer group, as more than one provider system can be assigned.

How to fix this error?

Use the provider systems to determine the logical ports.

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.