Stand-alone self-dump

When running a virtual storage dump and stand-alone dump error recovery detects errors in stand-alone dump, stand-alone dump can take a self-dump before proceeding. At most, stand-alone dump takes twelve self-dumps; after the twelfth request for a self-dump, stand-alone dump stops taking self-dumps, but continues to count the number of self-dump requests and continues to issue the AMD066I message. After a large number of self-dump requests, stand-alone dump terminates. Stand-alone dump places both the self-dump and the operating system dump onto the output tape or DASD.

You can use the LIST subcommand of IPCS to print stand-alone dump self-dumps. The format of the subcommand is as follows, where x = 001 - 012. See z/OS MVS IPCS Commands for more information.
LIST address COMPDATA(AMDSAxxx)