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SNA Sense Codes
Each major error code has modifiers for further description in sense byte 1. The
modifier codes supported, and the SNA host or terminal condition causing the
negative response to be returned, are described below:
Path Error X '80'
X'OS'-NO SESSION
A BIND has not been received or accepted.
X'07'-8egmenting Error
Error is due to incorrect sequencing of segment elements.
X'08'-PU NOT Active
The 3708 has not received or accepted an ACTPU, or a control condition
caused an internally generated DACTPU.
X'09'-LU NOT Active
The 3708 has not received or accepted an ACTLU, or a control condition
caused an internally generated DACTLU.
X'OA'-PIU Too Long
If RU is greater than X' 7FF' bytes long, and the BIND specifies a
maximum RU length.
X'OE'-Unrecognized Origin
A request other than BIND is sent to an SLU that has already accepted a
BIND, and the OAF' is not X'OO' or the OAF in the accepted BIND.
X' OF '-Invalid Address Combination
A request was addressed to the PU (OAF' =X'OO'), and the OAF was not
SSCP (OAF' =X'OO').
RH Error X'40'
X '06 '-Exception Response Not Allowed
LIC carried exception response when BIND specified definite response.
X' 07 '-Definite Response Not Allowed
LIC carried definite response when BIND specified exception response or
LIC carried definite response.
X'OF'-Format Indicator Not Allowed
An FM request received by the 3708 indicated a formatted header was
included.
State Error X '20'
3-42
IBM 3708 Description
X' Ol'-8equence Number Error
The sequence number of the normal flow request did not match the number
expected.
X' 02 '-Chaining Error
Chain elements were out of protocol sequence.
X' 03 '-Bracket State Error
A bracket state error occurred.
X' 04 '-Direction Error
A normal flow request was received while the 3708 was in send state.
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