only 4 character for motp #915

Hello,

There is an issue related to the mOTP configuration. It may not necessarily be a bug, but when a mandatory policy is enforced, this process must be supported correctly.

Currently, the mOTP value for RADIUS is required to be exactly 4 characters long, and the system is very strict about the character count. If the policy is changed to require 8 characters, many automation processes fail because they are still restricted to a 4-character mOTP.

For example, in our environment, the policy requires an 8-character mOTP, but since the implementation is hardcoded to 4 characters, it causes numerous issues and breaks the automation workflow.

If possible, could you please fix this issue or update the implementation so that mandatory policies requiring a different mOTP length (such as 8 characters) are properly supported?