Status codes for load programs

If the ISRT call is successful, DL/I returns a blank status code for the program. If not, DL/I returns one of several possible status codes.

If an ISRT call is unsuccessful, DL/I returns one of the following status codes:
LB
The segment you are trying to load already exists in the database. DL/I only returns this status code for segments with key fields.

In a call-level program, you should transfer control to an error routine.

LC
The segment you are trying to load is out of key sequence.
LD
No parent exists for this segment. This status code usually means that the segment types you are loading are out of sequence.
LE
In an ISRT call with multiple SSAs, the segments named in the SSAs are not in their correct hierarchical sequence.
LF
Initial load of PHDAM or PHIDAM attempted ISRT of a logical child segment.
V1
You have supplied a variable-length segment whose length is invalid.