Hi to all!

i am using table buffering enabled with my free tables. the following
are my basic code :

*Form Load() event
set multilocks on
=cursorsetprop("buffering",5,"salesHdr")
=cursorsetprop("buffering",5,"salesDtl")

*Save Button-Click()
SELECT SalesHdr
DO WHILE .T.
IF TABLEUPDATE(.T.)
EXIT
ELSE
messagebox("Error in updating table" , MSGOK_LOC)
ENDIF
ENDDO
WAIT CLEAR
SELECT SalesDtl
DO WHILE .T.
IF TABLEUPDATE(.T.)
EXIT
ELSE
messagebox("Error in updating table" , MSGOK_LOC)
ENDIF
ENDDO
WAIT CLEAR
**

My question :
Why sometimes tableupdate could not commit successfully? especially in the network environment?i already did all the possibility to make the network in safe. like i issue RLOCK and UNLOCK before issuing REPLACE or any other command that need to lock a record when it issued.What are the lists of the possibility why the tableupdate(.T.) could not commit successfully?


Hope someone can help my greatest problem.

holden