Issue : Tally Import Error - Item does not exist in Tally.
Solution :
1. Please check if specified Item Name exist in Tally,
2. if already exist, Please make sure there is no space before or after Item name in tally as Tally consider it as different name.
3. if doesn't exist, Please Create the missing Item in Tally with same name, Make sure there is no space at the end of Item.