This error appears in the following situations :

 

1) In some Standard templates, there are two columns for Voucher-type in the Excel sheet. viz

 Type : To specify the base / pre-defined Voucher type.

 VchType : To specify the user defined Voucher type.

 

A common mistake is to incorrectly specify it as :

 Type : North Sales

 VchType : North Sales

 
The correct method is :

 Example 1: (Correct method)

 Type : Sales

 VchType : North Sales

 

 Example 2: (Correct method)

 Type : Sales

 VchType : Sales

 

2) The option/setting Create dependent Masters is off/disabled and the specified Voucher type does not exist in Tally.