The logical child insert call

To insert the logical child segment, the I/O area in an application program must contain either the logical child or the logical child/destination parent concatenated segment in accordance with the destination parent's insert rule

For all DL/I calls, either an error is detected and an error status code returned (in which case no data is changed), or the required changes are made to all segments effected by the call. Therefore, if the required function cannot be performed for both parts of the concatenated segment, an error status code is returned, and no change is made to either the logical child or the destination parent.

The insert operation is not affected by KEY or DATA sensitivity as specified in a logical DBD or a PCB. This means that if a program is other than DATA sensitive to both the logical child and destination parent of a concatenated segment, and if the insert rules is L or V, the program must still supply both of them in the I/O area when inserting using a logical path. Because of this, maintenance programs that insert concatenated segments should be DATA sensitive to both segments in the concatenation.