Trigger Issue

Recently I've created SQL Triggers to record changes to the order fle
Trigger definition Is

create trigger ithttpobj/updtcord0f after update
of dmcsck
on ibm_dat/snord0f
referencing
OLD row as r1
NEW row as r2
for each row mode db2sql
when (r1.dmcsck <> r2.dmcsck)
insert into ithttpdat/tcord0f(ORNORDINE , ORCDEALER
, ordcancel , orfinvio , ordinvio)
values(r1.DMFSCK , r1.dmcsck , current date ,
char('N') , char('0001-01-01') )

In some case I get an error that I haven't been able to figure out how to solve.

Member QTRG000001 already exists in file QTRG000001 in library QTEMP.
SQL system error.
Function check. SQL0901 unmonitored by QDBUDR at statement *N, instruction
X'076C'.
Failure for device or member SNORDLCK file SNORDLCK in library IBM_DAT
CPF5257 I/O error was detected in SNORDLCK
The only "strange thing" is that in the logical file SNORDLCK the field DMCSCK refer to the trigger update Is not present

Anybody have suggestions.

Thanks

Basilio

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