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Starting a multi-pipe pipeline operation from another multi-block pipeline

I have a scenario where, although I have 2 projects (A and B) both configured in Jenkins with multi-unit pipelines jobs, the problem is that Project B depends on project A.

So, I found that several times when I checkout the code in Project A, I also need to build ProjectB when A was built. Now, before I start exploring pipeline builds, I will have work per branch, then run in Jenkins relevant work for Project B for the relevant branch.

What I would like to configure in Jenkinsfile so that when ProjectA / develop runs, it will run a multiprocessing pipeline job for ProjectB and the same branch.

I have:

stage ('Trigger Tenant Builds') {
        build job: "ProjectB/${branch}", wait: false
    }

But my ProjectA is not working:

ERROR: No parameterized job named ProjectB/develop found

Any ideas?

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I have solved it now. What I am doing is defining the launching thread in the B Jenkinsfile project:



pipelineTriggers([ 
    upstream( 
       threshold: hudson.model.Result.SUCCESS, 
       upstreamProjects: "/ProjectA/" + env.BRANCH_NAME.replaceAll("/", "%2F") 
    )
])
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