Exit options

The exit options field is a 2-byte field that indicates the functions for which VTAM® will call the exit routine. This field is modified by the exit routine during begin function processing. The bit definitions are described in Table 1.

Table 1. Exit options
Dec (Hex) offset	Size (Bytes)	Description
0 (0)	1	Functional Support Flags B'1... ....' The exit routine processes the initial authorization function (function code X'00'). B'0... ....' The exit routine does not process the initial authorization function (function code X'00'). The default is 0. B'.1.. ....' The exit routine processes the interchange node selection function (function code X'02'). B'.0.. ....' The exit routine does not process the interchange node selection function (function code X'02'). The default is 0. B'...1 ....' The exit routine processes the border node selection function (function code X'01'). B'...0 ....' The exit routine does not process the border node selection function (function code X'01'). The default is 0. B'.... 1...' The exit routine processes the end function (function code X'FF'). B'.... 0...' The exit routine does not process the end function (function code X'FF'). The default is 0. B'.... .1..' The exit routine processes the CDS selection function (function code X'03'). B'.... .0..' The exit routine does not process the CDS selection function (function code X'03'). The default is 0. B'.... ..1.' The exit routine processes the alternate CDS selection function (function code X'04'). B'.... ..0.' The exit routine does not process the alternate CDS selection function (function code X'04'). The default is 0. B'.... ...1' The exit routine processes the central resource registration function (function code X'05'). B'.... ...0' The exit routine does not process the central resource registration selection function (function code X'05'). The default is 0.
1 (1)	1	Functional support flags B'1... ....' The exit routine supports application GDS processing. B'0... ....' The exit routine does not support application GDS processing. The default is 0. B'.1.. ....' The exit routine requests caching of local DLU resources. B'.0.. ....' The exit routine does not request caching of local DLU resources. B'.... ..0.' The exit routine does not support MODIFY EXIT processing. The default is 0. B'.... ..1.' The exit routine supports MODIFY EXIT processing. Bits that are not shown are reserved.

Tip: When caching local resources is enabled, directory services caches local DLU resources when they are found during locate search processing. This results in a directory services database storage increase of 218 bytes for each local resource found as the DLU of a search.