insert report in XML format into an external web service through a workflow, with API call

insert report in XML format into an external web service through a workflow, with API call

Hello!

I need to know if someone has been able to insert a report in XML format, with a workflow in an external web service.

And if they have succeeded, how have they done it?

I have tried the map () function and I have not succeeded, I get an error due to URL extension since it exceeds 2048 characters

I have also tried doing an addition of variables
<URL> + <XML>
And I get the same result as in the previous paragraph

When trying to perform with the Postman it indicates the same error

But if I enter the XML manually in the parameter of my external web service, I get a satisfactory answer

With that I consider the value I am trying to enter as a parameter to be correct, but I am not able to insert it with a workflow

Anyone know how I can get this?