How To Fix USMD1019 - Data model &1, entity type &2: Invalid data element &3

SAP Error Message - Details

• Message type: E = Error

• Message class: USMD1 - Datenmodel

• Message number: 019

• Message text: Data model &1, entity type &2: Invalid data element &3

What causes this issue?

The entity type &V2& is used in the hierarchies of entity type &V4& as
an additional entity type with the usage <LS>Hierarchy Name</>. The data
element defined for the entity type must fulfill the following technical
prerequisites:
Data type: CHAR, NUMC or CUKY
Maximum length: 30 characters
At least one of the prerequisites is <ZH>not</> fulfilled for the data
element.

System Response

The data model cannot be saved or activated.

How to fix this error?

Specify a data element for entity type &V2& that fulfills the relevant
prerequisites.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.