| Previous | Next |
| TAPI_E_INVALBUTTONSTATE | TAPI_E_INVALHOOKSWITCHDEV |
TAPI_E_INVALDATAID
What is invalid
TAPI_E_INVALDATAID (0x8004002F) means a provider-defined phone data-segment ID is invalid for the requested operation. These IDs are scoped to the capabilities and lifetime of a particular phone/provider object; they should not be assumed stable across firmware, provider or device generations.
Capture the data-segment contract
- Phone object identity, provider version and current capability generation.
- The rejected data ID, segment size, access direction and API method.
- The list of data IDs/capabilities enumerated from the same live object.
- Any firmware update, provider restart, reconnect or object recreation since the ID was obtained.
Focused test
Enumerate the provider's current data segments and perform the smallest supported read/write using one freshly returned ID and the documented segment size. If the fresh ID succeeds, remove cached IDs from the application lifecycle. If no segment is advertised, do not guess an ID from an older provider version.
Correction
Scope provider-defined IDs to the object that supplied them, validate segment size/direction, and refresh capabilities after provider or device changes. Keep this result distinct from TAPI_E_INVALFEATURE and button/lamp-ID errors; each refers to a different provider capability namespace.
Verification
After refreshing capabilities, read or write the intended segment using a current ID, then confirm an intentionally unknown ID is still rejected. This checks both the recovery path and the application's validation logic.
Technical references
Looking for a different code? Search another status or error code.