I was able to add / update standard USER object using API calls few weeks back but now it is throwing errors.
POST - ADD API - https://domainname/v1/data/objects/GsUser
PUT - UPDATE API - https://domainname/v1/data/objects/GsUser?keys=Email
"errorDesc": "Wrong api called, Transactional Data Load not supported for this object. Please check Gainsight Documentation."
Can you please advise why this is happening now ? Also what is alternate way to “INSERT, UPDATE” GsUser object using Rules or API ?