To add a custom field in M3, you have to start with associating the data with a master table you want to use. Very high volume tables may not be the best choice for custom fields, as it adds a extra database write to every key change on that table.
As an example, I will setup an additional value for an Item. The Item Master table in M3 is MITMAS. For the new field, we'll call it the License Required field. We'll use this to see if a customer needs a special license to purchase a product.
When you open CMS080, you'll see three entry fields at the top of the grid. The first is the table you want to link the data to. In our case, it will be MITMAS. The next field is the reference we'll use to refer to the UDF. We'll call this one LICS for License. The 3rd field is for the map to point to a field in the extension table. (See CUSEXTMI/CUGEX1 for details on available fields) For this table, the first two characters are always F1. So in this example I'll map to F1A030, which is a 30 character field.
Now, the rest of the information needs to be defined. You can configure several requirements on the custom field in CMS080/E. This will complete the addition of the field. Now, you can go to any detail panel that accesses that Master Table, in our case, MITMAS, and add that field.
Since we updated a field for the Item Master, open up MMS001 and select an item. Under the Related Menu, click on Personalize, then Add Custom Field. This will allow the addition of the field to the panel.
