Error in Katalon Studio when using SOAP API: ParseError at [row,col]:[1,1] Message Content is not allowed in prolog

Hello Katalon Community,

I’m encountering an issue while working with a SOAP API in Katalon Studio. I’m receiving the error message “ParseError at [row,col]:[1,1] Message Content is not allowed in prolog” and need some help to resolve it.

Here are the details of my problem:

  1. I’m using Katalon Studio to send a SOAP request to a specific API.
  2. The request seems to be well-formed, and I’ve double-checked the request body and headers.
  3. However, the API is responding with the mentioned error, and I can’t proceed.

I’m not sure what is causing this error, and I would appreciate any guidance or suggestions on how to troubleshoot and resolve this issue.

Thank you in advance for your assistance!

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Can you share the response body? The error says something wrong with the response object

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Hi @nsyahirahzmi,

Does your SOAP message contain binary files?

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