public-pool/src/models/enums/eStratumErrorCode.ts

export enum eStratumErrorCode {
    'OtherUnknown' = 20,
    'JobNotFound' = 21,	// (=stale)
    'DuplicateShare' = 22,
    'LowDifficultyShare' = 23,
    'UnauthorizedWorker' = 24,
    'NotSubscribed' = 25
}