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    Type:Task 
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    Resolution: Fixed
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    Priority:L3 - Default 
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    Affects Version/s: None
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    Component/s: None
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    None
Steps to reproduce:
- create PR in platform-ee repo and assign "no-build" label
- trigger pipeline execution
Expected:
- All stages to be skipped and not executed
Observed:
- The Prepare stages are executed and fail as no upstream build is found
Hints:
- The 'when' clause is negating the false that is return for prLabels.contains("no-build")
- The 'distro-ee' stage doesn't have when clause at all
Solution idea:
- remove STANDALONE param and use UPSTREAM_PR instead and fix the negation in the 'when' block for all pipelines beside CE where this is not applicable