ANTF0417E

Explanation
The FlashCopy® request reqtype contained
an invalid extent specification for device devn.
exttype1 and exttype2 indicate
the extent type of SOURCE or TARGET.
extnum1 and extnum2 indicate
the position number of the extent in error as specified on the request.
 An extent consists of the beginning track and ending track identifiers
specified on the request (also called an extent range).  For example,
the first source extent specified on the request will have the position
number of '1', the second source extent specified will have the position
number of = '2', etc.  The first target extent specified on the request
will have the position number of '1', the second target extent specified
will have the position number of '2', and so forth.
The device
number devn indicated in this message will reference
the source device number specified on the request unless the invalid
extent specified was only found on the target device, in which case devn 
will indicate the target device number, or dashes (––)
if a device number is not available.  If the invalid extent specification
is found on a single device, either source or target device, exttype2 
and extnum2  will contain dashes (––).
The
following function codes (fc) indicate the particular
invalid specification that was found for the extent or extents:01
You already specified this extent as a source extent for this
request.  You have already specified an extent range which includes
this extent.
02
You already specified this extent as a target extent for this
request.  You have already specified an extent range which includes
this extent.
03
The extent specification is not 8 characters long.
04
The extent specification contains non-hexadecimal characters.
05
The extent specification is incomplete.  Both beginning and ending
track identifiers must be specified for an extent
06
The extent specification is beyond the range of the device.
07
The extent specification is beyond the range of the number of
tracks per cylinder.
08
The beginning track identifier is greater than the ending track
identifier for the extent.
09
The number of source and target tracks is not equal for the specified
extents.
10
The number of source and target extents is not equal.

System action
FlashCopy request
not processed.

System programmer response
Make the appropriate changes to the
specified request, and resubmit the request.  Use the FlashCopy query request to determine the
current status of the device.  See z/OS DFSMS Advanced Copy Services for
examples of FlashCopy query
output.  If the request continues to fail, search problem reporting
databases for a fix for the problem. If no fix exists, contact the IBM® Support Center.

Source
ESS FlashCopy.