I have z table in which i have main material and this is key field.
For this material there are sub material for which i need to perform certain calculations.
Since in z table material is key field .Will it better to put give
main matnr matnr1 matnr 2 matnr3 - all separately in columns
main matnr matnr1,matnr2, matnr3 - all in one text field separated by ,.
Any other suggestion are welcome.We are not prefering to change material master table.