Return Codes

The following table lists the return codes of internal TaskD APIs.

**Table 1** Return codes of internal TaskD APIs
Return Code	Value	Meaning
NilMessage	4000	Empty message
NilHeader	4001	Empty message header
NilPosition	4002	Empty location information
DstRoleIllegal	4003	Invalid destination role
DstSrvRankIllegal	4004	Invalid server rank of the destination role
DstProcessRankIllegal	4005	Invalid process rank of the destination role
DstTypeIllegal	4006	Invalid destination role type
ClientErr	4999	TaskD client error
RecvBufNil	5000	Empty receiver buffer
RecvBufBusy	5001	Blocked receiver buffer
NoRoute	5002	No route path
ExceedMaxRegistryNum	5003	TaskD network registrations exceeding the upper limit
ServerErr	5999	TaskD server error
NetworkSendLost	6000	Message loss
NetworkAckLost	6001	Message ACK loss
NetStreamNotInited	6002	gRPC stream not initialized
NetErr	6999	TaskD network error

Parent topic: Internal TaskD APIs