Request:
{"customerId":"***","operation":{"updateMask":"accountBudget,proposalType,proposedSpendingLimitMicros","create":{"accountBudget":"customers\/***\/accountBudgets\/***","proposalType":"UPDATE","proposedSpendingLimitMicros":"***"}}}
Fault
-------
Status code: 3
Details: Request contains an invalid argument.
Failure: {"errors":[{"errorCode":{"accountBudgetProposalError":"UNKNOWN"},"message":"The error code is not in this version.","location":{"fieldPathElements":[{"fieldName":"operation"}]},"details":{"unpublishedErrorCode":"AccountBudgetProposalError.INVALID_MASTER_SERVICE_AGREEMENT"}}],"requestId":"***"}
In UI it works fine.