How To Fix USMD2055 - UI element &1: UI element type 'Sets' not possible for entity type &2

SAP Error Message - Details

• Message type: E = Error

• Message class: USMD2 - Master Data: UI Modeling

• Message number: 055

• Message text: UI element &1: UI element type 'Sets' not possible for entity type &2

What causes this issue?

You want to create UI element &V1& with <LS>Sets</> as the UI element
type. Entity type &V2& does not allow sets since the
<DS:DE.USMD_HAS_SET>Sets</> checkbox is not selected for this entity
type in the data model. This means that you cannot create a UI element
for sets for the entity type.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Choose an entity type for which the <LS>Sets</> checkbox is selected, or
select the <LS>Sets</> checkbox for entity type &V2& in the data model.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.