Edit forbidden error, but not all the time.

Question

Anyone else experienced this? 
I'm getting occasional errors from a rule and the detail in the audit log is "edit forbidden". But this only happens randomly. Below is a good example, where in a short period of time, in the same Project (it's a global rule) there was a successful, a No action performed and a "some errors" with this stage error.
The field "StatusChanges", is read only, as in, it isn't configured for "Edit screen" so that people cannot manually mess with the entries added by the rule. This works...absolutely! and as shown below, works in this project only minutes apart. 
So what could it be? Any ideas @Bill Sheboy or @Mykenna Cepek

Doug Levitt_tunij3 · Answer

@Curt Holley

I typically ignore intermittent errors (that is, it usually works, but rarely doesn't).  Occasionally, I need to manually modify a Jira ticket to address the "data corruption" (i.e. data is not in the state I would normally expect).

Because I anticipated the Automations not being 100% reliable, I have implemented a set of Monitors for each important automation.  Each Monitor checks for deviations which should not occur if the original Automation was successful.

Examples include:

- Monitor to check synchronicity between PBIs and SubTasks (where a PBI is a Story, Bug, etc.)

- Monitor to check synchronicity between Epics and PBIs (where a PBI is a Story, Bug, etc.)

These monitors write warning to Slack Channels.  I spend about 5 minutes each day scanning these and making corrections if needed.

As a note, we have ~ 225 developers across 30 Squads, running in synchronized Sprints.

Curt Holley · Answer

Thanks @Mykenna Cepek I have checked most of those and indeed i do get "explainable" errors from time to time with such (global) rules. But in this case, their is no consistency as the screenshot demonstrates (3 examples all in the same Project, where 2 out of 3 work, one doesn't)
I did this morning wonder if it is as @Doug Levitt points out, that it is to do with traffic/volume/stability of Jira at a given moment. Based on this occurring yesterday Jira Software Status - Various features are not working for some Atlassian Cloud customer around the time I started getting seemingly random failures.

Thank you both for responding!!!

Doug Levitt_tunij3 · Answer

Please note, I have also seen this issue intermittently (but definitely not often).  It occurs when the Jira system is unstable (due to high volume).