Problem with creating sub-task after migration from jira Cloud

[Вячеслав Калашников]

After migrating the data from Jira cloud to Jira server we can not create sub-task and system returns this error. 

Kindly provide me your valuable suggestions

[Fabio Racobaldo _Herzum_ · Accepted solution]

Hi @Вячеслав Калашников ,

based on the error, it seems that there's some validator or postfunction that cause this issue at sub-task workflow level in creation.

Please check that workflow and remove/fix all invalid validator/post function .

This should fix your issue.

Fabio

[Вячеслав Калашников]

Thank you