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Published: May 06 2010, 10:42:00 PMUpdated: November 28 2020, 8:22:59 PM

As shown below, my GetCategoryInfo call failed with Input data is invalid error

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Summary
  

   You are getting this error because the X-EBAY-API-REQUEST-ENCODING HTTP Header is missing for the request. If Shopping API calls are sent via HTTP POST method, the X-EBAY-API-REQUEST-ENCODING HTTP Header is required for identifying the input formats: JSON, XML, NV, or SOAP.

 

 

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