Update existing issues using CSV import does not work

Question

I am trying to update one field for thousands of existing issues in a team-managed project on Jira cloud. I have admin access and am using External System Import with a CSV file.

I have scoured threads and followed every instruction out there, but nothing works.

My CSV file has 3 fields: Issue Key, Issue Summary and Process Number (the field I want to update).

I have also tried mapping additional fields - parent ID, Issue Type, Issue ID and more. NOTHING works.

Please tell me if I am missing a step or if what I am trying to do just cannot be done.

Below are screenshots showing my import and the error I receive.

April_Taylor · Answer

I have not resolved it. Was hoping someone would have an answer, but it doesn't look like anyone does.

Javier Garay G · Answer

I'm facing exactly the same issue, also with admin permissions.

Did you manage to resolve it?

April_Taylor · Answer

@Tansu Akdeniz I've tried every which way. In the example above I was only importing the 3 fields shown.