Upon return, register 15 contains a return code indicating the success or failure of this request and can contain the following values:

0

The Preinitialization environment mask has been returned.

4

Non-valid function code.

16

The token is not valid.

20

The PreInit table entry indicated by ceexptbl_index was empty.

24

The index passed is outside the range of the table.

48

CELQPIPI was called from a non-64–bit environment.