To assign the newly created form template to the application object type FFO_DUNN, Carla must create the following Customizing entry.
This customizing item available in Implementation Activities app, under General Settings → Extensibility → Output Management → Assign Form Template.
Carla creates a new entry with the following values:
| Field Name/Data Type | Value |
|---|---|
| Application Object Type | FFO_DUNN |
| Output Type | DUNN_NOTICE |
| Form Template ID | your new template (YY1_XXX) |

There is no problem with a duplicate assignment as above.
In the Output Parameter Determination app, we define which form template is used for which dunning procedure.