Unchangeable fields in my table? (1 Viewer)

I cannot change the value in one of my fields in my Customers table. Is there some function that locks tables that I am unaware of (I am unaware of a lot )

The most likely possibility is that this field is defined as AutoNumber, and as such, cannot have its value updated or changed. Look in the Design View for the Table to determine this.

Another possibility (if you are using a Form to update the Field), is that the Form Locking Property for the Control related to the Field has been turned on.

Thanks, changing it in the form worked. What's the Form Locking Property? Is that in the property panel?