Format of the 6701 log record with VTPO identifier

If an APPC or OTMA message is discarded because of a send type error, IMS does not log a type 6701–CMEA/CMEB record for the error.

The lack of type 6701–CMEA/CMEB records makes debugging for the Message Control/Error exit routine (DFSCMUX0) difficult. It does log type 6701–CMEA/CMEB records for errors related to other devices, however. The following table shows the VTCB posting in DFSVTPO0.

Table 1. VTCB posting in DFSVTPO0
Offset Hex code Description
+0

X
X'00'
X'04'
X'08'
X'0C'
X'10'
X'14'
X'18'
X'1C'
X'20'

Function code
VTCB is to be posted
VTCB is to be released
Check if ACB can be closed
Delete a VTCB
Stacked logon for static CLB
NSEXIT for static CLB
NSEXIT for dynamic CLB
LOSTERM for static CLB
LOSTERM for dynamic CLB
+1

X
X'04'
X'08'
X'0C'
X'10'
X'14'

Type of checking RQD for post
Post if node is active
Post if node not active
Post if idle and not active
Hard post the node
Post an MSC LLB
+2

X
X'80'
X'40'
X'20'

  

X'01'
X'02'
X'03'
X'04'
X'05'
X'06'
X'07'
X'08'
X'09'
X'0A'
X'20'
X'30'
X'31'
X'40'

Conditional data for posting
Type is ISC parallel session
Type is MSC LLB
Z-NET cancel in progress

On detection of an error, this byte contains one
of the following reject codes:
VTCB not specified
Inspection failed—check subcode
Node not idle
RQR failed—check subcode
Node active—check subcode
Node not alive—check subcode
Invalid request
MSC link already posted
MSC send outstanding
Node already dispatched
No VTCB to delete
CINIT rejected by PLU (NSX)
VTAM® error (NSX)
Stacked logon procedure failure
+3

X
X'01'
X'02'
X'03'
X'04'
X'05'
X'01'
X'02'
X'03'
X'04'
X'05'
X'06'
X'07'
X'08'
X'01'
X'02'
X'03'
X'04'
X'05'
X'06'
X'07'
X'08'

Posting-rejection subcode1
Node already dispatched (RQR)
Node already posted (RQR)
Unpostable I/O (RQR)
Clear issued (RQR)
Inact performed (RQR)
SPQB not found (INSPECT)
No match on CLB ADDR (INSPECT)
VOPEN not on (INSPECT)
VTCB not found by scan (INSPECT)
No match on VTCBs (INSPECT)
CIDs do not match (INSPECT)
VOPEN not set (INSPECT)
Temporary VTCB (INSPECT)
No /idle node CMD (POSTRTN)
Node inoperable (POSTRTN)
Node dispatched (POSTRTN)
Line already posted (POSTRTN)
V2SND is set (POSTRTN)
Not XRF sync mode (POSTRTN)
Not SCIP exit with clear (POSTRTN)
SCIP exit bindrace done (POSTRTN)

+4 0F Post code
+4

X
X'80'
X'40'

NSEXIT flag
Cleanup RU
Notify RU
+5 X

NSEXIT type for CLBLOST
+6 X

Reason code for CTBRTERM
+7 X

Notify reason code
+8 F

VTCB address
+C CL8

VTAM node name
+14 F

CID
+18 CL8>

SPQB name if parallel session
+20 0F

CLBNCID for a stacked logon
+20 F

Sense data (NSEXIT)
Note:
  1. This byte contains an additional qualifier subcode.