Same ID for both variables error

Hello, NAV gurus.

There is exist some object. I have create new variable, let say XXX and try to save object. Get such error:

The local variable ID 1101484000 is used by both local variable XXX and local variable YYY in the trigger ZZZ.

Seems to me some ID counter needs to reset, but how can I do this? Or how else can I resolve such error?

Assign manually some other ID for new variables is not interesting

Many thanks in advance!