Validation rule created using VB Studio Express not working on Promote and Local and Global Transfer

Summary:

Validation Rule created using VB Studio Express which is working on change assignment page, the same rule is not working on Promote and Local and Global transfer page.

Content (please ensure you mask any confidential information):

We have department change validation rule on change assignment page, where if the department value is changed during transaction then a warning message will be generated below the location field. Attaching rule and its functionality on change assignment page, checked using preview option.

We created the same validation rule on Promote and Loacal and Global transfer page, but there the rule is not getting picked during transaction.