applyToSources: Error or Skip on Missing Source ID?

[Sung chan wi]

Hello,

I need a quick clarification on the engine's behavior.

I am using different source model files (source_model_A.xml, source_model_B.xml).

• source_model_A.xml contains a source with id="A1".

• source_model_B.xml does not contain id="A1".

Consider this logic tree, which does not use applyToBranches:

<logicTree logicTreeID="lt1">
  <logicTreeBranchSet branchSetID="bs_teams" uncertaintyType="sourceModel">
    <logicTreeBranch branchID="bA">
      <uncertaintyModel>source_model_A.xml</uncertaintyModel>
      <uncertaintyWeight>0.5</uncertaintyWeight>
    </logicTreeBranch>
    <logicTreeBranch branchID="bB">
      <uncertaintyModel>source_model_B.xml</uncertaintyModel>
      <uncertaintyWeight>0.5</uncertaintyWeight>
    </logicTreeBranch>
  </logicTreeBranchSet>

  <logicTreeBranchSet branchSetID="bs_Mmax_A1"
                      uncertaintyType="maxMagGRAbsolute"
                      applyToSources="A1">
    </logicTreeBranchSet>
</logicTree>

Question:

When the logic tree selects the path with source_model_B.xml, what happens? Does the engine:

1. Fail with an error because source A1 is not found?

2. Skip the BranchSet and continue the calculation?

This will help me understand if applyToBranches is strictly required to prevent errors in this case.

Thank you.

[Marco Pagani]

Hi, it should fail, but you can easily test it by yourself.

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