DCP Series Telcon Message Manual - Public Support Login - Unisys

Sense Data
IBM/Unisys RH Usage Error (Category X'40')
D–24
Indicates that the value of a field or combination of fields in the RH violates architectural
rules or previously selected BIND options. These errors prevent delivery of the request to
the intended component and are independent of the current states of the session. They
may result from the failure of the sender to enforce session rules. Detection by the
receiver of each of these errors is optional.
The sense code is in hexadecimal.
4001 Invalid SC or NC RH. The RH of a session control (SC) or network control
(NC) request was invalid. For example, an SC RH with pacing request
indicator set to 1 is invalid.
4002 Reserved.
4003 BB Not Allowed. The Begin Bracket indicator (BBI) was specified incorrectly;
for example, BBI = BB with BCI = BC.
4004 CEB and EB Not Allowed. The Conditional End Bracket indicator (CEBI) or
End Bracket indicator (EBI) was specified incorrectly; for example, CEBI =
CEB when ECI = ¬EC or EBI = EB with BCI = ¬BC, or by the primary
half-session when only the secondary may send EB, or by the secondary when
only the primary may send EB.
4005 Incomplete RH. Transmission shorter than full TH–RH.
4006 Exception Response Not Allowed. Exception response was requested when
not permitted.
4007 Definite Response Not Allowed. Definite response was requested when not
permitted.
4008 Pacing Not Supported. The Pacing indicator was set on a request, but the
receiving half-session or boundary function half-session does not support
pacing for this session.
4009 CD Not Allowed. The Change Direction indicator (CDI) was specified
incorrectly; for example, CDI = CD with ECI = EC or CDI = CD with EBI = EB.
400A No-Response Not Allowed. No-response was specified on a request when not
permitted. (Used only on EXR.)
400B Chaining Not Supported. The chaining indicators (BCI and ECI) were specified
incorrectly. For example, chaining bits indicate other than (BC,EC), but
multiple-request chains are not supported for the session or for the category
specified in the request header.
400C Brackets Not Supported. The bracket indicators (BBI, CEBI, and EBI) were
specified incorrectly. For example, a bracket indicator was set (BBI = BB,
CEBI = CEB, or EBI = EB), but brackets are not used for the session.
7436 0728–303