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TAPI_E_INVALGROUPID
What TAPI_E_INVALGROUPID means
TAPI_E_INVALGROUPID The group-pickup identifier is invalid for the active telephony provider or pickup configuration.
What to check
- Capture the group ID after any application normalization.
- Verify that the group exists and is assigned to the current line/address.
- Check provider limits on identifier format and whether the group configuration changed since it was cached.
Handling
Use the provider’s current pickup-group identifier. If the group was changed administratively, refresh the application configuration before retrying pickup.
References
- Microsoft: TAPI_E constants — official Microsoft documentation used to interpret the HRESULT.
- Microsoft: TAPI 3.1 Reference
- Microsoft: Telephony API interfaces
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