SYNADAF error descriptions

Table 1 describes some of the internal system logic. Future technical updates may cause changes to sample phrases that describe the existing or new error conditions. These sample phrases are at offset 91. IBM® reserves the right to change the internal system logic and these phrases at any time.

Table 1. SYNADAF – Sample Phrases
Error Message	Description
NO ERROR STATUS	There was no error.
OUT OF EXTENT	Trying to read or write outside the allocated space.
PREVIOUS D.E. ERROR	After the previous channel program completed successfully with channel end status, the I/O subsystem reported a device end status with an error.
PURGED REQUEST	The I/O request terminated early by software.
CHANNEL CTL CK	Channel-Control Check. Machine malfunction affecting channel-subsystem controls.
INTRFACE CTL CK	Interface-Control Check. Invalid signal has occurred on the channel path. Usually indicates a malfunctioning of an I/O device.
PROGRAM CHECK	Program Check. Programming error in channel program such as: invalid command code, invalid address or invalid flags.
PROT CHECK	Protection Check. The channel program attempted a storage access that is prohibited by the protection mechanism. This applies to fetching of CCWs, IDAWs, and output data, and to the storing of output data.
CHAINING CHECK	Chaining Check. I/O data rate is too high for the resolution of data addresses.
END OF FILE	Unit Exception. Tape mark or disk file mark was read. Sometimes the system simulates this due to end of DASD extent or end of tape.
WRNG. LEN. RECORD	Wrong Length Record. Length of block differs from what the access method expected.
PADDING ERROR	During input the access method determined that the block has an invalid content. This implies an error when the block was being written. Perhaps there was a power or control unit failure during the write.
EQUIPMENT CHECK	Equipment check. An equipment malfunction was detected between the I/O interface and the I/O medium.
BUS OUT CHECK	Bus out check. The I/O device or the control unit recognized certain error conditions on the channel path.
COMMAND REJECT	Command reject. The I/O device has detected a channel programming error.
INTERV REQUIRED	Intervention required. The command could not be executed because of a condition that requires human intervention at the I/O device.
DATA CHECK	Data check. The control unit or I/O device detected invalid data. Incorrect data might have been placed in virtual storage or recorded at the device.
OVERRUN	Overrun. For a request for service from the I/O device the channel subsystem failed to respond to the control unit in the anticipated time interval.
SEEK CHECK	Seek check or incomplete domain. The expected number of data transfer commands specified by the locate record count parameter were not received.
TRACK OVERRUN	Imprecise ending. In the domain of a locate record or locate record extended command, the exception status is for a previously completed CCW.
IMPRECISE END	Imprecise ending. In the domain of a locate record or locate record extended command, the exception status is for a previously completed CCW.
CYLINDER END	Cylinder end. A command tried to continue past the end of the cylinder.
INVALID SEQ	Record sequence error. Invalid sequence with seven track tape or the block ID shows that the block was read out of sequence.
NO RECORD FOUND	No record found. Requested block was not found.
FILE PROTECT	File protect. Disk: An operation violated the define extent command or the file mask in a locate record command. Typically this means the channel program tried to operate outside the data set. Tape: The tape cartridge is protected against writing.
MISSING A.M.	Missing address marker (if reading) or write inhibited (if writing).
OVERFLOW INCOMP	Invalid track format, trying to write too much data on a track or the format of the data on the track was not valid for the type of operation being performed.
WORD COUNT ZERO	Word count zero on reel tape or deferred unit check on cartridge tape. Failure is associated with a unit check status that is not related to the execution of the current command.
DEFERRED U.C.	Deferred unit check. Error in a previous command.
DATA C.CHECK	Data converter check on seven-track tape or 'assigned elsewhere' on cartridge tape. 'Assigned elsewhere' means the device is associated with a unit check status. It is disabled by dynamic partitioning on the selected channel path.
ASSIGNED OTHER	Assigned elsewhere. The device is disabled by dynamic partitioning on the selected channel path.
NOT CAPABLE	Not capable. The tape drive cannot read a data block on a tape. Either the recording-format identification at the beginning of tape is missing or not readable, or the data block exceeds the maximum block size.
NOT READY	Magnetic tape not ready.
7-TRACK TAPE	Record Sequence Error. The block ID shows that the block being read is out of sequence.
AT LOAD POINT	At beginning of tape.
WRITE STATUS	Write Mode. The most recent command was a write-type command.
READY	Drive is online.
NOT IN SRCH.LMT	The record was not found.
SPACE NOT FOUND	Either there is no dummy record when adding a format-F record or there is no space available when adding a format-V or format-U record.
I/O ERROR	I/O error.
END OF DATA	The record requested is an end of data record.
ERROR NOT I/O	Error other than for data transfer. The access method is BDAM, which set exception code bit 6. One possibility is that there was a unit check and not data check and the condition was not "no record found". Another possibility is that the failure was not a unit check and not a wrong length record.
EXCLUSIVE CNTRL	A WRITE, type DIX or DKX, has occurred for which there is no previous corresponding READ with exclusive control.
INPUT DCB	A WRITE was attempted for an input data set.
LIMCT=0-EX.SRCH	An extended search was requested, but LIMCT was zero.
CAPACITY RECORD	Writing a capacity record (R0) was attempted.
INCORRECT KEY	A READ or WRITE with key was attempted, but either KEYLEN was zero or the key address was not supplied.
INVALID OPTIONS	The READ or WRITE macro request options conflict with the OPTCD or MACRF parameters.
FIX.LEN.KEY'FF'	A WRITE (add) with fixed length was attempted with the key beginning with X'FF'.
UNKNOWN ERROR	Indeterminate error.