i am new to the TDL Coding, i want to make tdl for modifying stock item which allows me to store scheme data...i.e buy 19 get 1 free. eventually when i apply the scheme it shall consider actual quantity as 20 and billed quantity as 19. i have modified stock item to provide an option in stock item master....but i do not know the rest.... Can anyone help me.? [#Part: STKI Basic Features] Add: Part:After:STKI Batch:SchemePart [Part:SchemePart] Line: schemeLine [Line: SchemeLine] Fields: Medium Prompt, Logical Field Local:Field:medium prompt:Set as:$$LocaleString:"Is Scheme Applicable?:" Local:Field:Logical Field: Storage:SchemeoptionUdf [System:UDF] SchemeoptionUDf:Logical: 12010