Error:-
While pushing the artifacts jar files to the gitlab project package registry got error Unauthorized (401) as mentioned below
[ERROR] Failed to execute goal:- Failed to deploy artifacts: Could not transfer artifact ExampleApp:jar:1.1 from/to gitlab-maven (https://gitlab-dedicated.com/api/v4/projects/1520/packages/maven): status code: 401, reason phrase: Unauthorized (401) ->Scenario:-
It was a maven project with private runners running and pushing the artifacts to the project package registry. Usually we are able to achieve this without any issue using the deploy token with mvn clean deploy goal in other projects without any issue. But the lately the project was different because it was having the multiple artifacts created via rest api request and using the maven to push to the gitlab package registry due to which we cannot run mvn clean deploy. so instead we end up using the mvn deploy:deploy-file to push the artifacts resulting in the authentication issue even with the deploy token when the deploy token itself is having the permission on the package registry as per the gitlab documentation.
Cause:-
Even after trying all the tokens not able to push to the gitlab package registry. It was because of how our settings.xml file has been written. If you just pushing the packages directly in package registry you need to follow the following gitlab documentation
https://docs.gitlab.com/ee/user/packages/maven_repository/