
Key name already exists
You have tried to add a new user–defined field for a table. In the User Tables Keys — Setup window, you have entered a name in the Key Name field, but the name has already been entered and saved in SAP Business One for this table.
In the Key Name field, enter a name that has not yet been specified for this table. To check whether a key name has already been specified, in the Selected Key field, view the key names in the dropdown list.