Knowledge Doc: APPC Distributed Program Link Error : Receive allocate for CPMI, communications error x'0000'

When a attempting a distributed program link over LU6.2 SYNCLEVEL 2 defined connection between 2 Enterprise Server regions the transaction abends and the following message appears in the console log:

Receive allocate for CPMI, communications error x'0000'.    

Full article: https://portal.microfocus.com/s/article/KM000011088