This topic outlines the restrictions that apply to an established and enabled referential constraint in check pending.
You can open the parent file of a constraint relationship that the system marks as check pending, but you are limited in the types of input/output (I/O) operations that you can do. You can read and insert records, but you cannot delete or update records.
To perform update and delete operations on a parent file with an enabled referential constraint in check pending, you can first disable the constraint and then perform the I/O operations that you want.