I solved this problem.can use the rename user restapi.
Kindly send me the rest api link which one you used
Hi @Mugilan Sukumar,
It will depend on you're Crowd version, but sm likely used
POST /rest/usermanagement/1/user/rename
Refer to the documentation here:
https://docs.atlassian.com/atlassian-crowd/4.4.0/REST/#usermanagement/1/user-renameUser
Take care,
Shannon | Atlassian Community Support
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