unable to open subflow context

[Balamurugan R2]

when I am trying to open the subflow context from main flow, getting below error in subflow context page.

Exception while executing request: Cannot invoke "com.snc.process_flow.v2.model.structure.FlowElement.getType()" because the return value of "com.snc.process_flow.v2.model.structure.FlowStructureExpert.getFlowElementForSourceAlias(String)" is null

[Savan]

This happens when one of the flow actions is not able to get inputs properly. My guess is you have an email action which is not getting the value of email address properly. Try removing it from the flow and testing the flow again. Alternatively, if you look into the flow engine context for the execution of that flow you will be able to find the action where the error is happening. Once you fix/remove the action , this should be fixed. 

[Medi C]

Hi @Balamurugan R2,

It looks like your subflow does not set an output which is mandatory.

could you please check on that?

[Michael McNulty]

Are you sure subflow outputs are mandatory? I have several subflows I've created that all accomplish a specific set of tasks without returning any output. In each of those subflows they're all recieving inputs but not returning any output since no output is needed in those cases.