Unable to create tag on branch lastest commit using http POST request - 404 null

[rameshthoomu]

When I try to create a tag in bitbucket for the latestCommit, I am getting below 404 error. No Cluse what's going wrong.

Content-Type: application/json
Using authentication: Bitbucket
Sending request to url: https://<myserver>/rest/branch-utils/1.0/projects/pmp/repos/<myrepo>/refs/tags
Response Code: HTTP/1.1 404 
Response: 
<?xml version="1.0" encoding="UTF-8" standalone="yes"?><status><status-code>404</status-code><message>null for uri: https://<myserver>/rest/branch-utils/1.0/projects/pmp/repos/<myrepo>/refs/tags</message></status>

Could you please help me as quickly as possible on this.