1. Log in as admin
2. Click i the cog (right side of the menu bar) for Confluence administration and click on General configuration
3. Select REST API Browser from the left menu
4. Type projectdoc in the input field on the left upper side and unselect Show only public API
   
   
5. Select projectdoc/1/document from the services listed on the left

To select the documents to apply the changes to, we need to find all documents in a state prior to "Released" and want to change their Iteration value to "Production".

This is the Where Clause to select these documents of doctype role: $<Doctype>=[role] && $<Iteration>~(Facade, Filled, Focused, Finished)

Check that every listed document is correctly part of the result set. If not adjust you Where Clause accordingly. If everything is correct, copy the value of id-list.

This is the list of page IDs that match your result set. Copy the values without the quote characters Make sure that you do not miss any digits (i.e. from the first or last page ID).

Now switch to the PATCH tab.

Add the list of page IDs from the last step to the id-list parameter.

Add the following information to patch the list of documents.

{
   "property": [
     {
       "name": "Iteration",
       "value": "<ac:structured-macro ac:name=\"projectdoc-iteration\"><ac:parameter ac:name=\"value\">production</ac:parameter></ac:structured-macro>",
       "controls": "hide",
       "position": "replace"
     }
   ]
 }

This JSON document will replace the value of the Iteration property on each document referenced in the id-list.

If you have a recent backup and checked this on a test environment, then click Send.

The response will contain a list of results changing the documents.