Based on standard healthcare IT (EDI 837/999 transactions), payer enrollment systems (e.g., Medicare, Medicaid, or commercial payers like UHC, Cigna), and provider portal terminology, here is a structured .
When processing systems append acronyms like "HAP" or "UPD", they usually signal system-specific actions:
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: Type in the Company Name , Customer Number , and Authorization Code .
Always refer to your specific state or managed care guidelines, as the specific navigation fields in HAP may vary by jurisdiction. Based on standard healthcare IT (EDI 837/999 transactions),
| Error Message | Typical Cause | Solution | | :--- | :--- | :--- | | invalid_grant: Code expired, was reused, or redirect URIs don’t match | The authorization_code is expired (often a very short lifespan, e.g., 5 minutes), has already been used, or the redirect_uri in the token request does not exactly match the one used to obtain the code. | Exchange the code for tokens immediately after receiving it. Ensure the redirect_uri is an (case-sensitive) with the one registered for the app. Never reuse a code. | | invalid_client | The client_id or client_secret is incorrect, or the app type (public/confidential) is misconfigured. | Double-check the credentials in your app server’s configuration and verify the Trusted Application settings in the HAP platform. | | unsupported_grant_type | The grant_type parameter in your token request is not authorization_code or refresh_token . | Ensure your request’s grant_type is set exactly to authorization_code (for the initial exchange) or refresh_token (to renew an access token). | | invalid_scope | The requested permissions (scopes) are not allowed for your application. | Verify the Trusted Application’s configuration in the HAP platform to ensure the requested scopes are included and enabled. | | The reason attribute are mandatory for user_grant permissions. (HarmonyOS Only) | This appears during compilation for HarmonyOS apps. The reason field is missing for a user_grant permission in module.json5 . | For a HarmonyOS HAP, open the module.json5 file and ensure that every permission in requestPermissions (of type user_grant ) has the reason field properly configured. |
Store salt per-record or application-level HMAC secret; never store plaintext code. If you share with third parties, their policies apply
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