End-of-volume return codes

End-of-volume returns a code in register 15 that indicates if the request was successful. Table 1 describes these return codes.

Table 1. Return Codes in Register 15 Following End-of-Volume
Return Code	Meaning
0(X'0')	Successful.
4(X'4')	The requested volume could not be mounted.
8(X'8')	The requested amount of space could not be allocated.
12(X'C')	I/O operations were in progress when end-of-volume was requested.
16(X'10')	The catalog could not be updated.