Hi @siling,
Welcome to the Docusign Community!
We are glad to have you here and can't wait to help share as much knowledge as possible.
I am sorry to hear that you have been experiencing issues with your Power Automate integration due to this error, but I will assist you in correcting the issue.
This error is usually related to missing administrative permissions on the DocuSign eSignature user being called out by your Power Automate worfklow.
I believe you will find useful this previous post where this error was resolved.
USER NOT ACCOUNT ADMIN (PowerAutomate/DocuSign)
Feel free to let us know if you need further assistance with this.
Thank you for using Docusign, we hope you have a wonderful rest of your day!
Best regards,
Alejandro R. | Docusign Community Moderator
Please click "Best Answer" below if you find my reply to be a valid solution to your issue!