Q: What information should be communicated to fellow developers regarding validation rules or configuration changes?

Answer

Whenever a proposed configuration change involves altering a field on a transaction screen or changing the required, optional, or not permitted status of a field, the proposed change should be described to all developers by sending e-mail to mit-abap, to avoid problems where one change unexpectedly affects another area.

To communicate the necessary information the e-mail should describe the proposed change and the fields affected. If possible explain the circumstances in which the validation/substitution rule is invoked, what transpired prior to the rule change, and the expected effect of the rule change. As completely as possible, inform mit-abap of the transactions, screens or programs, the change effects.