This can be done through a PL/SQL code after the process (page processing), or using the APEX template construct :
Oracle Apex : Delete master details error :
Page -> Processing -> Processes:
- Identification:
- Name: <my process name>
- Type: Clear Session State
- Settings:
- Type: Clear Items
- Item(s): <my form PK item>
Enjoy.
Tags:
Oracle Apex