Hello @Sai Vidya Animala , thanks for sharing the details. Please note that there is a limit of only one allowed 'Free' account, per resource type, per subscription.
Have you checked the resource whether it is mapped correctly in the studio?
Also is this issue only with this OCR detection service with this resource region? I would suggest you share more details regarding the issue.
You can try logging out of Vision studio and logging back in to see if that resolves the issue.
I hope this helps.
Regards,
Vasavi