What makes a field lock down when still in a record?

[RSW]

I have a form for which edits aren't allowed once the user navigates to a new record. That's how we want it.

But, there is one particular field where, once data is entered in the field and the user moves on, it can't be modified...even when the user has remained in the same record! This isn't the case for the other fields on the form. Does anyone know why this one field might behave differently?

Thanks in advance...

 

[missinglinq]

Best guess would be something the field's AfterUpdate event. We can't really see your code from here!