re #hmacsha256 #hmacsha-1 here is the pre-script code for POSTMAN to send Soap #C29HQS63G #C2K2RJNAC #postman `let baseString = `${account}&${consumerKey}&${tokenId}&${nonce}&${timestamp}`;` let key `*=* `${consumerSecret}&${tokenSecret}`;` let signature 

*=* CryptoJS.HmacSHA256(baseString, key).*toString*(CryptoJS.enc.Base64);

I have an updated the c# .net sample project which is currently broken in the Netsuite Docs (https://www.netsuite.com/portal/developers/resources/suitetalk-sample-applications.shtml) , to use hmacSha256 , the CreateSignature function is the only code really needing update. (yes this problem also broke us down right before our Go Live fun )