How To Fix UD610 - Entity type stored in addition to data model. Not assigned to a model.

SAP Error Message - Details

• Message type: E = Error

• Message class: UD - EDM - Enterprise Data Model

• Message number: 610

• Message text: Entity type stored in addition to data model. Not assigned to a model.

What causes this issue?

The entity model was not stored in a data model (colored-in area).

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?

Despite this fact, the entity type can be created. Choose the
'Continue' function. In the next dialog box, enter the ID of an entity
type that does not yet exist. You are taken into the create screen for
entity types. Make the necessary entries there and save the entity
type. The entity type is now created, but has not been assigned to a
data model.
To assign an entity type to a data model at time of creation, create
the entity type when you insert it into the data model graphic (into
the corresponding colored area).
You can cancel the process of insertion that you started in the
subsequent dialog box.

Error message extract from SAP system. Copyright SAP SE.