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https://help.tallysolutions.com/docs/te9rel51/Creating_Masters/Inventory_Info/Stock_Categories.htm

Stock Categories

Stock Category offers a parallel classification of stock items. Like stock Groups, classification is done based on similarity in behaviour.

For example,

Stock Item

Sub Group

Main Group

Sub-Category

Main Category

Brand A - 19” TFT

Brand A

Grade One

TFT

Monitor

Brand A - 17” CRT

Brand A

Grade One

CRT

Monitor

Brand B - 19” TFT

Brand B

Grade Two

TFT

Monitor

Brand B - 17” CRT

Brand B

Grade Two

CRT

Monitor

The advantage of Categorizing items is that you can classify the stock items (based on functionality) together – across different stock groups which  enables you to obtain reports on alternatives or substitutes for a stock item.

You now have the details of TFT and CRT products, duly classified. You can also view the Monitor classification.

For enabling Stock Category option in the Inventory Info menu, press F11 > Inventory Features > Set Yes for Maintain Stock Categories.

Go to Gateway of Tally > Inventory Info. > Stock Category

More:

Creating a Stock Category

Creating Multiple Stock Categories

Displaying a Stock Category

Altering a Stock Category