Hello Team, I am able to call groups webservice successfully. I am using Salesforce Apex language for calling the webservices. But, I am getting HTTP Status code 400 (Bad Request) error while calling Cases webservice. Below is the data I am passing to webservice DataForSignature: (request-target): post /v1/cases host: rms-world-check-one-api-pilot.thomsonreuters.com date: Thu, 31 Jan 2019 11:36:58 GMT content-type:application/json content-length:168 {"secondaryFields":[],"providerTypes":["WATCHLIST"],"name":"george w bush","groupId":"XXXXXXXXXXXXXXXXXXXXXX","entityType":"INDIVIDUAL","customFields":[]} Authorization: Signature keyId="XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",algorithm="hmac-sha256",headers="(request-target) host date content-type content-length",signature="j2tnBYB7uIVQCvOKZJ2qALCrkD1hn7vShp298PhzU50=" Can you please help me understand the reason for Bad request statuscode 400 issue?