IBM System/370 145 Operating Procedures Manual page 54

Alter/Display Error Messages
INVAL CHAR
This message prints when one of the following error occurs:
1. The first character of a mnemonic is not A, D, or S.
2. The second character is not M,S, L, K, C, G, F, P,
T, or V.
(S and L are for service personnel.)
3. An invalid hex digit is typed when addressing or
altering data.
4. The CANCE L key is pressed.
5. A ·character with a parity error is detected on the
PR-KB bus-in line.,
INVAL ADDR
Prints when one of the following errors occurs:
1. Invalid starting address.
2. Updated address exceeds the capacity of specified storage.
3. Non-translated logical address .. (DV LLLLLL ,
INVAL ADDR).
4. The translated real address exceeds the capacity of main
storage. (DV LLLLLL
=
RRRRRR
INVAL ADDR).
I
Operating Procedures 53