Hi All: In Netsuite OAuth2.0 during POST Request to the Token Endpoint i am frequently getting this error: { "error": "unsupported_grant_type" } Can anybody please help me to resolve this please? Thanks in Advance!

share your postman request setup

message has been deleted

code, redirect_uri and grant_type should be body parameters

this encoding should be in headers right?

there is a dropdown in the body tab to set the encoding

ohk got it.

Keep in mind that your access token expires in an hour and your refresh token in 7 days

Thank you battk! I did the same as you mentioned and now getting this error.

{
   error: "invalid_client"
}

this is client id and client secret related

Thanks Battk! Yes i am going as per Step 2... and to generate Basic authentication i doing like this: encode.convert({string: '<clinetID>:<Client secreate>' ,inputEncoding: encode.Encoding.UTF_8,outputEncoding: encode.Encoding.BASE_64 }); and the returned value i am using in Authentication infront of Basic?

you probably want to check that it works in postman first

yes i am testing in postman only, i have used that api just to get that Base64 string to authenticate, but when using postman i am getting "invalid_grant" error and while using using netsuite script i am getting "invalid_client" i am not understanding how?

probably some difference between the two

This screenshot include headers part

Content-Type header is wrong in the headers

In postman Authorization tab i have selected Basic Auth but it is asking for credentials?

thats where you enter the Consumer Key / Client ID and Consumer Secret / Client Secret from the integration record

in Basic Auth it is asking for Email Id and Password?

what does this look like?

It look like this

thats correct

i was sending that Base64 string in headers befor

basic authentication consists of a username and password separated by a : encoded with base64, prefixed with Basic, and then put into the Authorization header

Hi battk, I have successullu executed the OAuth2.0 process in suitelet, Thank u so much for you guidance and support i really appreciate it. Thank u so much!