https://community.appian.com/discussions/f/integrations/13470/xlsx-document-uploading-requestHi Guys , We are giving the document(content of the document) as a request to the POST API . When we trying to pass XLSX extension document its throwing an error . Appian is auto detecting the documents with reference media Type . But I cannot seeen-USTelligent Community 12https://community.appian.com/thread/61046?ContentTypeID=1Wed, 03 Oct 2018 11:41:17 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:5d40d696-28fb-446f-932a-c207c8494174Chanakya VolamHi,<br /> <br /> I dont think issue is with document but may be with header and body of request. Can you post the snippet for proper understanding<div style="clear:both;"></div>https://community.appian.com/thread/61042?ContentTypeID=1Wed, 03 Oct 2018 08:16:04 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:fcb2f780-26ec-4df7-9c02-d33c98396893rudrakshakammarigNo , am not converting . simply passing the doc.<div style="clear:both;"></div>https://community.appian.com/thread/61041?ContentTypeID=1Wed, 03 Oct 2018 07:12:08 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:0f899f60-4e95-4c7e-87b1-1d258465f6e9simples533Hi there, <br /> <br /> How you passing XLSX document to request ? you converting it to base64 or another format ?<div style="clear:both;"></div>