The user code is invalid error message is caused by an existing code that may be in conflict with a code you wish to add. The panel’s duress code is the same as the user code being entered, so a diffe...The user code is invalid error message is caused by an existing code that may be in conflict with a code you wish to add. The panel’s duress code is the same as the user code being entered, so a different user code should be selected or the duress code should be changed. Note: If the user does not have a preference, click Generate Code to generate a random available code for the user. Note: This applies to all user codes on the account, not just user codes added to the lock.