Issue Summary

If a rule is created to set the field Story points Estimate to a value on a transition, in a Next Gen Scrum board, it fails with the following error.

Steps to Reproduce

1. Create a Next Gen project using the scrum template.
2. Once created, go to it's board and try to create a rule of type Update an issue field as follows.
   
3. Click Add.

Expected Results

• The rule should be successfully created.

Actual Results

• An error is thrown.

• Console log suggests the below response for the call /rest/internal/simplified/1.0/projects/<pid>/issuetypes/<issuetype>/transitions/xx/rules/all

  {"errorMessages":[],"errors":{"customfield_xxxxxx":"Selected field is not valid."}}
  

• Removing the Story point estimate field from the issuetype in the call OR even deleting the issuetype from the project doesn't help.
• From support side, tried unlocking the custom field before adding the rule. This didn't help either.

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available