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Responsive Resident
Responsive Resident

How should we troubleshoot a problem "The specified column is generated by the server and can't be specified."?

The scenario when this error is showed:
1. User creates a SharePoint item with the canvas app form;

2. User updates the canvas app form in the power apps studio and publish it;

3. user tries to edit the created SharePoint item with the updated canvas app form.

4. User gets the error "The specified column is generated by the server and can't be specified."

I am using patch function to push updates from different canvas app forms and I have recently set a custom format date fields inside the SharePoint list:

  "$schema": "",
  "elmType": "div",
  "attributes": {
    "class": "=if(@currentField <= @now + 604800000,'sp-field-severity--blocked', if(@currentField <= @now + 1209600000, 'sp-field-severity--warning', if(@currentfield <= @now + 1814400000, 'sp-field-severity--good', 'sp-field-severity--good')))"
  "children": [
      "elmType": "span",
      "style": {
        "display": "inline-block",
        "padding": "0 4px"
      "attributes": {
        "iconName": "=if(@currentField <= @now + 1814400000,'Error', '')"
      "elmType": "span",
      "txtContent": "@currentField"


The strange things is that is can create and edit new items with the newly published canvas app form, but cannot edit the already created items. Perhaps someone has experienced this issue? Could SharePoint list column formatting have caused this?


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