batch macro error message -The output connection "Output9" was not a valid connection

aatalai

Hi all 

I have a batch macro that reads in files from SharePoint; I use it twice in my workflow. In previous days it has worked fine but now I get an error message saying that the output is not valid, for one of the times the macro runs, but works fine for the second macro.

I've tried deleting and adding a new macro output in the macro but still get the same error (other than the numbering of the output). Can anyone help suggest how to resolve the issue?

Macro screen shot

the workflow

aatalai

solved - it was a data input issue, there was actually no data in today's SharePoint file, hence the error. But now is resolved, though I 've never seen a control parameter directly linked to a tool, is there any documentation you could share around that, as when I tried in a another macro it didn't work (as aspected - didn't get an error