IEC050I

Explanation
A TRUNC macro instruction was issued for a PDSE
member processed by QSAM. Block boundaries are not maintained for
PDSE members; therefore, the short block created will not be reflected
on input. This attention message is issued only on the first occurrence.
In
the message text: mod
The name of the module which detected the error.
ddname[-#]
DDname (followed by a concatenation number if it is part of a
concatenation and not the first DD statement in the concatenation).

System action
The current buffer is released, but block boundaries
will not be maintained. On the first occurrence of the TRUNC macro,
an indicator is set in record type 15 in the SMF data set. Processing
continues.

Programmer response
Analyze the program to see if the TRUNC
macro is necessary to operation.

Source
DFSMSdfp