# AI告诉阿联酋居民使用IBAN接收工资，但未验证AE校验位，导致工资发放被拒

- **ID:** `banking/uae-iban-missing-ae-check-digits`
- **领域:** banking
- **类别:** data_error
- **错误码:** `PAYROLL-IBAN-CHECK-DIGIT-001`
- **验证级别:** ai_generated
- **修复率:** 85%

## 根因

阿联酋IBAN（格式AExx xxxx xxxx xxxx xxx）需要两位校验位（第3-4位），使用ISO 7064 mod 97算法计算；许多工资系统会拒绝校验位错误的IBAN，即使账号有效。

## 版本兼容性

| 版本 | 状态 | 引入 | 弃用 |
|------|------|------|------|
| UAE Central Bank IBAN Standard 2023 | active | — | — |
| WPS (Wage Protection System) v4.0 | active | — | — |
| Mashreq Neo 3.2 | active | — | — |

## 解决方案

1. ```
   Use an online IBAN validator (e.g., https://www.iban.com/structure/ae) to compute the correct check digit for your account number and BBAN. Then request your bank to update the IBAN on file.
   ```
2. ```
   Visit your UAE bank branch and request a 'IBAN confirmation letter' that includes the officially computed IBAN; provide this letter to your employer's payroll department.
   ```
3. ```
   If your bank supports it, use the mobile app's 'Share IBAN' feature which generates a QR code with the correct IBAN; scan this into payroll system.
   ```

## 无效尝试

- **Re-enter the IBAN manually, assuming a typo** — The check digit is mathematically derived from the entire IBAN; manual re-entry without recalculation will produce the same invalid check digit (70% 失败率)
- **Use the same IBAN for other transfers that succeed** — Some banks' internal systems bypass check digit validation for domestic transfers, but WPS payroll systems enforce strict validation (85% 失败率)
- **Ask the bank to generate a new IBAN from scratch** — The IBAN is tied to the account; a new IBAN requires opening a new account, which triggers KYC and may take 3-5 business days (90% 失败率)