Incorrectly applied standard actions can cause form buttons to become disabled during the execution of the form. If the button was not diabled due to the disabled property or the SET OBJECT ENABLED command, check if a standard action was applied in the property list and if the standard action is applicable.

For example, if a button that has code has the "Add subrecord" standard accidentally applied, when the form does not have anything to do with the obsolete subrecords, the button could be disabled.