Try-Itpost https://sandbox-apigw.optum.com/oihub/document/search/v1Body ParamsquerystringrequiredGraphQL queryvariablesobjectrequiredVariables for the GraphQL queryvariables objectoperationNamestringrequiredName of the GraphQL operation to executeHeadersproviderTaxIdstringrequiredProvider Tax ID Numberx-optum-consumer-correlation-idstringUnique UUID to track the transactionenvironmentstringEnvironmentnextPageTokenstringPaging Identifier to access the next set of recordsResponses 200Successful operation 400Bad request - includes validation errors for missing or invalid fields 401Unauthorized - Authentication failed 500Internal server error - Problem occurred on the serverUpdated about 2 months ago