A financial dimension value is based on the LAND-00013 record and has been used on a transaction. You cannot delete the LAND-00013 record AX 2012

 A financial dimension value is based on the LAND-00013 record and has been used on a  transaction. You cannot delete the LAND-00013 record

Scenario:

Sometime user trying to delete a record from the customer master or any data that relates to financial dimension. So, user is facing above error upon deletion.

Reason:

Error occurred because data exists in the table DimensionAttributeLevelValue

Solution:

1. Access the open the table DimensionAttributeLevelValue 
2. filter the record by Display Value field with the desired record to delete like customer number or employee number etc etc
3. Select the filtered records
4. Delete the selected records
5. Then go back to customer master or where you facing the error
6. Now try to delete you will be able to delete

AX 2012: you can directly delete the record by opening table

Source : https://dynamicsaxtechstuff.wordpress.com/2015/04/16/how-to-delete-unused-financial-dimension/