The table below lists the values (codes) in ascending order, in sections marked by error category.
| Code | Meaning |
|---|---|
| 0 | ONCODE has been used outside of an active ON-unit |
| System-Defined Condition Codes | |
| 001 – 099 | A UNIX system error has occurred; the value returned corresponds exactly to the UNIX system error codes as listed in your system documentation. |
| 100 – 89999 | An LPI run-time error has occurred; the value returned corresponds exactly to the Open PL/I run-time error codes, as documented in Appendix C. (Note that 89999 is the highest possible error number and that not all error numbers are currently being used.) |
| 9250 | A fetchable procedure was not found. |
| UNIX Signal Condition Codes | |
| 90000 | Shell exit for any reason other than UNIX signals, including EOF. |
| 90nnn | UNIX signal number nnn has been caught by the LPI run-time system. The value nnn corresponds exactly with the signal number as defined in your system documentation, except for the following signals: |
| 99001 | ERROR condition raised by SIGNAL ERROR statement. |
| 99011 | FINISH condition |
| 99020 | ATTENTION condition |
| 99110 | ENDFILE condition |
| 99120 | ENDPAGE condition |
| 99130 | KEY condition |
| 99140 | UNDEFINEDFILE condition |
| 99150 | RECORD condition |
| 99200 | Computational error; some operating systems indicate the precise cause of the error, in which case ONCODE will return the number corresponding to the more specific error description. |
| 99201 | OVERFLOW condition |
| 99202 | UNDERFLOW condition |
| 99203 | ZERODIVIDE condition |
| 99204 | SUBSCRIPTRANGE condition |
| 99205 | CONVERSION condition |
| 99206 | CONDITION condition |
| 99207 | AREA condition |
| 99210 | INVALID OPERAND condition |
| 99211 | INVALID_ADD_SUBTRACT condition |
| 99212 | INVALID_MULTIPLY condition |
| 99213 | INVALID_DIVIDE condition |
| 99214 | INVALID_MOD condition |
| 99215 | INVALID_COMPARISON condition |
| 99251 | INVALID_SQRT condition |
| 99252 | INVALID_ASIN_ACOS condition |
| 99253 | INVALID_ATAN2 condition |
| 99254 | INVALID_LOG condition |
| 99255 | INVALID_POWER condition |
| 99256 | INVALID_ATANH condition |
| 99257 | INVALID_COMPLEX_OPERAND condition |
| 99301 | Stack unwind condition raised during non-local GOTO. This corresponds to the SS$_UNWIND value. |