Power Query Parameter Conflict in Types

I have a Query that goes to a file on our system - the location and name is provided by par_COBRANCH (see attached File)


The M Code for the Query is

l

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When I refresh this Query I get the following error on the execution of the first row of the Query

Expression.Error: We cannot convert a value of type List to type Text.
Details:
Value=[List]
Type=[Type]

I got the same message when instead of converting the parameter to a List I converted it to a Table.


Does anyone have any ideas?

Thank You

Allister

Sorry - I can't see this query in the workbook. I can see only two connection only queries.

Not to me. I understand the error message, as I am sure do you, but I can't troubleshoot it using the attached file.

Sorry.

Why have you converted the parameter to a list in the last step?

Thank you for your reply. I was wanting to use it as a list in Manage Parameters..

But why? It's a single value.