There seem to be a problem with translation of the picklist value when the error pops out. Is this configured somewhere?
Salesforce out-of-box error messages cannot be translated directly using Translation Workbench. Since the values under error messages are being pulled dynamically - it uses the default org language - English.
Please refer to the below article -
https://salesforce.stackexchange.com/questions/346029/the-error-message-unable-to-obtain-exclusive-access-to-record-is-not-translateRegards
Sravani