Taking configuration management data and change business process data into account with regard to authorization and authentication rules

An approach receives a request from a user, typically a change implementer, on a computer system. The request includes a user identifier and a requested action. A current timestamp corresponding to a computer system clock is retrieved. Scheduled changes are retrieved from a data store accessible by the processor. The current timestamp is compared to the scheduled change periods. The requested action is allowed if the comparison reveals that the current timestamp is within one of the retrieved scheduled changes, and the requested action is denied if the comparison reveals that the current timestamp is outside of the retrieved scheduled change periods.