How to test Sign Up API (Post Method) for multiple users in Jmeter?

Question

I tried multiple user sign ups using Sign-up API (POST Method) with parameterization. But It's not working.

1. I have set the CSV Data set Config

2. Added the variable names in Param value

3. Added a HTTP Header Manager to define the content type (application/json)

4. My CSV sheet:

5. Added Cookie Manager:

6. The error shows Param not found

7. Output in Debug Sampler:

Will be much appreciated If anyone could help me find the mistake I am making. I am new to JMeter so It's fairly possible I am missing out something.

Answer 1

Most probably you need to add HTTP Header Manager and configure it to send Content-Type header with the value of application/json, it might be the case that your API treats the request body as the plain text hence cannot parse the provided data.