SAP Note 12761 - SY122 When Writing to a Queue From Within Update

Symptom:

When describing a queue with start ID 'A' from within update,
error message SY122 appears (impermissible statement in this
status...)

Cause and prerequisites

For queue processing type 'A' (automatic), background job scheduling
is performed in the module QUEUE_CLOSE.
However the statement necessary for this, that is, SUBMMIT REPORT...,
is not allowed in the update, resulting in this error message.

Solution
You must set the queue processing mode from 'A' to 'M'(manual) or
'B'(cyclic background job).
From 2.1H, event-oriented processing is also possible (E=event P=event-
periodic). The environment necessary for this (job variant, event..)
is automatically generated via queue management (SM38).

Key word: QUEUE