SAP Note 28383 - ME11 SAPMM06I: Purchasing group not checked

Symptom:

During the creation of an info record, the system did not check the purchasing group (ME11), so that a buyer was able to assign a purchasing group for which he had no authorization. In ME12, the authorization check was carried out, which meant that he was now unable to make any more changes.

Cause and prerequisites
Solution
See below.