Error from downstream download tool

[EpicTriffid]

Hi all,

I've set up a workflow with macros that downloads from an API. The actual download macro splits into two parts, one downloading values from one table, and the other downloading field names from another. They are then joined up later, and the output fed back into the original workflow. 

However, I always get the following error on the macro:

The tools referenced are the last two here:

The Filter is to remove any empty records and any records that are listed as "data_type". The final Select tool is to return two renamed columns. 

I can only assume that the error is related to the fact that prior to running the macro, the fields don't "technically" exist yet, and the macro runs perfectly fine anyway, so it's not a massive issue. But what I dont understand is why it's so focused on these two. The other path, which is still downloading in pretty much the same way, doesn't throw up any errors at all. That's this one:

I've replaced the two offending tools entirely, made sure there's no differences between the two download tools besides the table it points to, but the errors still appear. And the errors only appear on the outside(?) of the macro, in the parent workflow, not within the macro itself.

Any ideas? 

I've attached a copy of the macro workflow, but removed the API tokens to preserve security, so apologies for the errors being thrown up. 

[abacon · Accepted solution]

@EpicTriffid So the macro runs, just when you open it up, that error shows up, correct? If so, then yes it's because no metadata has been passed through and isn't an issue at all. Just needs to be run through to clear the error. I have encountered this many times and it is never an issue.

Bacon

[EpicTriffid]

Ah, that's good news then. Thanks for the clarification!