Cannot create now service account or rotate token

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I had a similar issue on an account where I rotated the service account key on quick succession.

1Password keeps a history of changes, but is seems like there is a limit to the length of the history it is able to retain, and when that is "full", you can no longer change the password.

So I had to change my code to instead remove and create a new service account with the same name on a regular basis, to clean out the history and avoid the issue.