T0009: Duplicate Description Name Formula

This error message indicates that the same System Formula has been defined more than once in the TDL i.e., either in the default TDL or in the customized TDL. The System Formula Name must be unique in Tally.ERP 9.

To override the same

Alter the System Formula Definition using Symbol Prefix # .

Example:

Let us assume, you need to override the System Formula “MaxNarrWidth” which exists in default Tally as

[System: Formula]

MaxNarrWidth        : 251

To alter the above Formula, you have to use # Prefix as shown below:

[#System: Formula]

MaxNarrWidth        : 270