Hello every one.
I have created a new project and now want to customize it to meet our customer-oriented needs. Unfortunately, I am unable to change any fields, even though I am the project admin. An error message appears. See attached images. I request a solution to this problem. Thank you in advance.
Projectlink: List - Series Support, Team Riedißer, MG26 - Jira
Link to customize:

Failure Message:

Best Regards
Torsten Oelschlägel
email:
torsten.oelschlaegel@mercedes-benz.com