You are getting below error message while trying to upload the custom discount list.
Invalid entries for ABC value XY is Invalid. (ABC represents the custom field and XY represents the custom code description)
SAP Business ByDesign
In the excel XY is the custom code description. You need to use the custom code instead of custom code description for extension field.
Change the value to custom code instead of custom code description for extension field.
For example in the custom field definition you have maintained the below details.
101 - XY
102 - XZ
Here 101 and 102 represents the custom code and XY and XZ represents the custom code description.
KBA , AP-PRC-PC , Calculation , Problem