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I Tried to call Cy.Request for Post API and i tried to send my Header as 
'Content-Type': 'application/json; charset=utf-8'

but in the request its sending 
  "content-type": "application/x-www-form-urlencoded",

something is overriding this so can any one help me how to set 
content-type 

Note: for Get its working fine 

Error im getting is

I found the solution as by adding the 2 things in cy.request which is mareked in the image below

I Created a Blog post to help others with same solution 
https://techkakani.wordpress.com/2023/02/16/how-to-set-content-type-as-application-json-in-cy-request-for-post-api/

That seems odd. Did you check the request headers to ensure that `content-type` was getting set? I wouldn't think `;` would work there.

Yes i checked it in the response it was showing. 
request header information too and i found it was set as required.