There are basically two main reasons why a safe lock replacement may be necessary. If the safe lock is defective or such functions and operation is needed that exceeds the capabilities of the existing lock.
If the safe lock operates uncertainly or incorrectly, is damaged and cannot be repaired, it can be replaced by a safe lock with the same functions. In case of a safe lock replacement often also a qualitative change will take place. Mainly a mechanical combination lock is exchanged to an electronic safe lock. The reason may be the relatively inconvenient or not flexible enough operation of a merely mechanical solution or the need of logging opening ang closing events, etc.
It is extremely important who performs the lock replacement. Only a firm and its service technicians with a license and appropriate expertise to change locks are suitable to perform a safe lock replacement meeting all important aspects.