Hi
Little feedback, its very hard to just "read" about your issue. You have a huge paragraph, but no code, no pictures, no nothing.
It honestly isn't fair to expect us to answer it without really, you know, sharing :-)
here is what I would like you to do please.
1. Share a Picture of the SharePoint List Columns (under settings)
2. Then click on the field Number_x bla bla and share a picture where it says the column is NOT read only
3. Please Share your Form, the Form Source, the Form Item and the patch Code.
We see only what you share, if you share like this no one is going to answer you.
Part II
1. Close App
2. Open Apps from the Power Apps Home page
3. In the list find your app name
4. Select the ... at the end
5. Select Details => Monitor
6. Once Monitor Loads, click Play Published App
7. Go to that App Tab
8. Cause the Error
9. Go to the Monitor
10. Type Error in the Filter (top right)
11. You will need to find the group of errors (its usually NOT just a single one, but like 2-4 lines of errors, where 2/3 of them are useless
and one of them, when clicked, opens the Right side fly out window, with 4 Tabs
12. Select the Response Tab (#4)
13. Expand Header and Body
It will show you there, the actual real issue, regardless of that lame error above. Come back if you need help but this should tell you
what to fix.
Also, please for the love of our eye balls, use a carriage return :-)
