For a simpler conversion from the System Variable *TIMESTMP, which expires in 2042, to a timestamp extended by a leading epoch byte, a new System Variable in the format B9 would be helpful. This should be structured analogously to the already planned System Variable *TIMESTMPX but should contain only the first 9 bytes of the *TIMESTMPX. The shortened form has the advantage that in the transition phase with B8 and B9 TIMESTMP fields can be worked parallel, since the MOVE B8 -> B9 is right-justified. Thus, the migration can be done step by step.
Thank you for a review of this requirement.