This error occurs when a definition is described with incorrect definition type.
Correct the definition type. Use Tally.Developer 9 to write the code as it has the intelligence to show syntax errors.
Example
[Feild: MyField]
Set as: "Tally Solutions"
In the above field definition, definition type is misspelt as Feild . When this file is compiled, the message error T0006: The description type is misspelt or incorrect. appears.
Corrected Code
[Field: MyField]
Set as: "Tally Solutions"