When I choose from the LOV, is not stored in the database

Have a field (Manager) where the user selects their manager in the list (generated by the following query)

Select FIRST_NAME. Last_name d, MANAGER_ID r
staff
where TITLE = 'MGR '.
order by 1

After the Manager is selected and you click on apply changes, nothing is stored in the database.

Have defined as field Manager specifications:

Source: only when the current value is session state is null
Source type: column database
Maintain Session State: per Session
Source of value or an Expression: MANAGER_ID

Well, how you created this form... manually or by using the wizard. If you have used the wizard, then it would be asked to select the table, and it would have created process for updating the same.

If you have created this form manually, then you must add a processs to update this database...

Kind regards
Shijesh

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