RH Usage Errors (Category X'40')
These sense codes indicate that fields in the request/response header (RH) are contrary to SNA rules or previously selected BIND options and prevent the intended half-session from receiving the request.
The checks 400A and 4012 are also performed. These do not permit negative responses because they apply to no-response sessions and responses, respectively.
The following codes are in this category.
| Code | Meaning |
|---|---|
| 4006 | Exception response not allowed |
| 4007 | Definite response not allowed |
| 400F | Incorrect use of format indicator |
| 4011 | Incorrect specification of RU category |
| 4014 | Incorrect use of DR1, DR2, ER |