SQLCODE -10000 (10k)

Hi,
Having this sql=-10000 on this statement below, which referes to some mismatch between columns and host-vars.
This runs from MicroFocus program against SQLServer'05 table, all hosts are well defined, same picture.
Interesting thing is that if I change ws-volume for literal, eg.
B3M_VOLUME = 21 it will work fine, but doesn't work with B3M_VOLUME = :WS-VOLUME:

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EXEC SQL
SELECT *
INTO :DCLVB3M-BASE
FROM VB3M_BASE
WHERE B3M_REMSEQ = :WS-REMSEQ
AND B3M_LOCSEQ =
(SELECT B3M_LOCSEQ FROM VB3M_BASE
WHERE B3M_REMSEQ = :WS-REMSEQ
x2 AND B3M_VOLUME = :WS-VOLUME
x1 AND B3M_BUST <> :WS-BUST)
END-EXEC.

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also anybody can point to good place to see list of all sql codes:

Tx all
dai