Hi Atsushi,
I have used dbvalid on the table U2WRK, on the index U2WRK_VC1 (which concern column WRKVC1) and after this, I have validated all the database, and the end message of the validation is no errors reported. But when I try my update, it fails again.
I unload-reload the table U2WRK, after this, it fails again also.
I drop the table U2WRK and re-create it, fail again.
Thanks for your quick answer,
Laurent