SCH4200 - 4299
| SCH4200 | CLS of AAA and FNA conflict. |
| SCH4201 | No Authcode table defined for this customer. |
| SCH4202 | VNET route has changed to NON-VNET route. CMFI contained greater than 2 levels of signaling, so it was zeroed. |
| SCH4203 | VNET route has changed to NON-VNET route. ISST has been zeroed. |
| SCH4204 | 60 or 70 ms is not supported when TDSO = NO, or 50 ms is not supported when TDSO = YES. |
| SCH4206 | TTY 15 is reserved for HIST file. |
| SCH4209 | BGD or PMS not allowed for user prompt if device is PRT. |
| SCH4210 | Numeric input out of valid range (1-9). |
| SCH4211 | Auto and R2 mode cannot be configured at the same time. Auto takes precedence and R2 mode feature will be turned off. |
| SCH4212 | Empty block is not allowed. |