Return Codes from the Relative to Actual Conversion Routine

When control is returned to your program, register 15 contains one of the following return codes:

Table 1. Relative to Actual Conversion Routine Return Codes
Return Code	Description
0 (X'00')	Successful conversion.
4 (X'04')	The relative track address converts to an actual track address outside the extents defined in the DEB.
8 (X'08')	Internal access method control blocks are invalid. Call IBM® service if the control blocks should be valid.
12(X'0C')	Internal access method control blocks are invalid. Call IBM service if the control blocks should be valid.
16 (X'10')	Passed concatenation number is too big for the data set.
20 (X'14')	The combination of the DEBNMTRK and DEBNMTRKHI fields in the last extent shows that the input track number points into this extent, but the calculated CCHH does not lie within this extent.