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TAPI_E_INVALADDRESSSTATE
Operation is invalid in the current TAPI address state
TAPI_E_INVALADDRESSSTATE is HRESULT 2147745805 (0x8004000D) from TAPI 3.0. The documented description is “Operation not permitted in current address state.” The result belongs to an address-level operation gated by registration, forwarding, or service state. A reliable diagnosis preserves the raw value and reconstructs the state that made this true: the address is not in a state that permits the requested action.
TAPI_E_INVALADDRESSSTATE means that the address is not in a state that permits the requested action.
Where the result appears
- This result can surface in a TAPI 3 address, call-control, terminal, stream, conference, dialing, or completion-management code.
- Map the failure to one concrete operation among ITTAPI, ITAddress, ITBasicCallControl, ITCallInfo, terminal and stream interfaces, provider events, and asynchronous request state.
An incident record must distinguish caller, runtime, provider, and backing resource while testing whether the address is not in a state that permits the requested action.
Typical causes and interpretation
The immediate contract boundary is specific: the address is not in a state that permits the requested action. Common cause branches include the following:
- The address is out of service.
- Registration or forwarding is already changing.
- The provider requires another state transition first.
Confirm the cause branch that explains why the address is not in a state that permits the requested action by using call arguments, object state, metadata, device information, or provider traces.
Correct handling and recovery
The primary recovery is to refresh the address state and issue the operation only after the required transition event. The failure report should capture the relevant state during an address-level operation gated by registration, forwarding, or service state so it is clear why the address is not in a state that permits the requested action.
When it follows cancellation or replacement, create a new generation before applying the recovery: refresh the address state and issue the operation only after the required transition event.
Practical scenario
A client requests forwarding while the address is being removed from service and waits for the address to return to an eligible state.
Difference from related HRESULTs
TAPI_E_INVALCALLSTATE applies to an individual call; it applies to the address object
Developer and administrator guidance
Use a controllable service provider or simulator to cover state races, capability differences, device removal, cancellation, and provider restart.
A runbook should preserve the original artifact and logs before the proposed recovery—refresh the address state and issue the operation only after the required transition event—changes evidence.
References
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