Cannot set as default customize print format

I try to set as default my custom print format. But getting error
Fieldname workflow_state appears multiple times in rows
I already check list fieldname in doctype but noting duplicate fieldname

If you add a custom workflow_state field then remove it and check it.

if i remove it, how about my data in workflow_state? is going to remove too?

Hmm :thinking:,

If have data in doctype, so
you can disable the workflow and check it.

But make sure, first, take a backup and try the scenario.

Thank You!