If a program is compiled under a 6.x release of Easytrieve Plus Report Generator and then run under CA Easytrieve release 11.x,
then "A021 Selectable Unit is not Available" error can occur.
Easytrieve Report Generator, release 11.6
The solution is to run the JOB0764L found in the Easytrieve release 11.x SAMPLIB library.
This job performs link edits necessary for use of the Easytrieve Runtime Compatibility functionality which is delivered with Easytrieve release 11.x.
This job Link Edits EZTPA00 with IDMS and/or IMS as necessary.