DCP Series Telcon Message Manual - Public Support Login - Unisys

Sense Data
IBM/Unisys State Error (Category X'20')
D–22
Indicates a sequence number error or an RH or RU that is not allowed for the receiver's
current session control or data flow control state. These errors prevent delivery of the
request to the intended component.
For LU 6.2 this category will be indicated within UNBIND or on negative response to
BIND.
The sense code is in hexadecimal.
2001 Sequence Number. Sequence number received on normal-flow request was not
1 greater than the last.
2002 Chaining. Error in the sequence of the chain indicator settings (BCI, ECI), such
as first, middle, first.
2003 Bracket. Error resulting from failure of sender to enforce bracket rules for
session. (This error does not apply to contention or race conditions.)
2004 Direction. Error resulting from a normal-flow request received while the
half-duplex flip-flop state was Not Receive.
2005 Data Traffic Reset. An FMD or normal-flow DFC request received by a
half-session whose session activation state was active, but whose data traffic
state was not active.
2006 Data Traffic Quiesced. An FMD or DFC request received from a half-session
that has QUIESCE COMPLETE or SHUTDOWN COMPLETE and has not
responded to RELEASE QUIESCE.
2007 Data Traffic Not Reset. A session control request (for example, STSN) allowed
only while the data traffic state is reset, was received while the data traffic
state was not reset.
2008 No Begin Bracket. An FMD request specifying BBI = BB was received after the
receiver had previously received a BRACKET INITIATION STOPPED request.
2009 Session Control Protocol Violation. An SC protocol has been violated. A
request, allowed only after a successful exchange of an SC request and its
associated positive response, has been received before such a successful
exchange has occurred (for example, an FMD request has preceded a required
CRYPTOGRAPHY VERIFICATION request). The request code of the particular
SC request or response required, or X'00' if determined, appears in the fourth
byte of the sense data.
200A Immediate Request Mode Error. The immediate request mode protocol has
been violated by the request.
200B Queued Response Error. The Queued Response protocol has been violated by
a request; for example, QRI = ¬QR when an outstanding request had QRI = QR.
7436 0728–303