"New" is missing in parent record for creating a new child record

Table ChequeDetail is a child table to Cheques. The ChequeNo column in ChequeDetail is of type Ref. “Is a part of” is set on. But when I open the Cheque form to create a new cheque entry, the word “New” does not appear at the bottom of the form. It used to be there but I seem to have done something to remove it. (The ChequeDetail “Add” action is set to inline, but changing this doesn’t make any difference.)

The parent/child relationship appears intact because if I create a cheque record and then manually create a matching detail record, then when I delete the cheque record it automaticaly deletes the detail record.

Anybody have any ideas how to bring back the “New”?

Confirm the ChequeDetail table allows adds (Control add, update, and delete operations - AppSheet Help)–or, if relevant, the pertinent slice allows adds (Slices: The Essentials - AppSheet Help).

Both do allow adds, updates, and deletions.

If you haven’t already:

Confirm the column’s Show? property is enabled.

Confirm the view’s Column order property isn’t configured in a manner that excludes the column.

Nope. Both are as you show. But I have been so frustrated by this that I have redesigned the tables. Thanks for your input though.