WHEN RE ORDER BILLING,S067-OLIKW UPDATE ERROR

HI:

WHEN RE TYPE ORDER BILLING, S067-OLIKW UPDATE ERROR.

table：s067

run the program RVKRED88 in se38 then see the results.

NOW is OK.

but,

so:SO-S027121  , Open delivery credit value is 5,831.00 cny.

so:SO-S027121-->DN:84000023--->  CREDIT FOR RETURN: 90003372(NO RELEASE)

BUT,S067-OLIKW UPDATE ERROR

So please suggest !

Thanks,