Hyunsun Jung Greetings& Welcome to Microsoft Q&A forum!> [Error Completions call failed. Please try again.]
Are you seeing this error for the first time? Was it working earlier? In which region is the resource located? If the deployment is successful and completions work successfully in the playground the API should continue to respond successfully. Is this a persistent error or only seen with few completions?
Please check the suggestions outlined here: https://learn.microsoft.com/en-us/answers/questions/1199718/azure-open-ai-playground-call-completions-failed-f?cid=kerryherger
and let us know if that helps.