update table ce_statement_lines_interface

Dear All,

im trying to update this table for customization purpose but it gives an error, can you please check

update CE.ce_statement_lines_interface set statement_number =  PH_statement_number , line_Number = k where bank_account_num =  p_account_number   and statement_number = PHL_statement_number;

since there s no API i'm using the direct update and since it is an interface, i guesse there is no problem

max we can purge all data

but it gives  an error : Exception: -1 - ORA-00001: unique constraint (CE.CE_STATEMENT_LNS_INTERFACE_U1) violated

can you please check..

thank you in advance