Getting Error while Using Procurement Contracts REST API to Update User Status

Hi ,
We are using Contracts REST API to update Contract user status and StateTransitionFlowState using the API :

https://Domain/fscmRestApi/resources/11.13.18.05/contracts/{contractId} ,
Payload:

{
"UserStatusCode" : "ABCD",
"StateTransitionFlowState" : "ABCD"
}

The same API is working fine in lower environments . However in Production getting the below error :

User Status: Attribute UserStatusCode in view object ContractHeader cannot be set.
StateTransitionFlowState: Attribute StateTransitionFlowState in view object ContractHeader cannot be set.

Kindly note that the Contract is in Draft status. Has anyone faced similar issue ?