Customizing Edit button function in Mobile App Builder

[SujanD345956992]

I have created the list experience in Launcher screen. On the record screen, I have created the new data parameter and UI parameter for Edit button to be able to be edited by user.

But when I try to update or write the value and submit it, I am encountering with the below error after submission and the data is not updating in the field.
Help me with this to figure out!

[Matthew_13]

Hi My Friend,

In almost every case I have seen its one of these:

• The update action isnt getting the right record (sys_id/table) from your new data/UI parameters, so it tries to save with no record context.

• The user can see the field but cant write to it ACL / field ACL.

• A Business Rule / Data Policy / Flow is blocking the update and Mobile just reports it as Could not execute the action.

What I say do next basic quicky checks:

1. Try editing the same field on the same record in the normal platform UI as that user.

   • If it fails there too → its ACL or server-side logic.

2. After reproducing in Mobile, go to System Logs → All and look at the exact timestamp — you’ll usually see the real error access denied, mandatory field, BR abort, etc,,,,

3. In UI Builder, verify your “Update record” action is using the record’s sys_id from the record data resource not a display value / blank parameter.

Most times the fix has been for me either: bind the action to the correct sys_id, or grant write access to that field/table for the user.

@SujanD345956992 - if help you answer; Please mark Solution Accepted and Thumbs Up

[Matthew_13]

@SujanD345956992 - Hopefully I help you my friend