How To Fix USMD1034 - Data model &1, entity type &2: Entire key is too long

SAP Error Message - Details

• Message type: E = Error

• Message class: USMD1 - Datenmodel

• Message number: 034

• Message text: Data model &1, entity type &2: Entire key is too long

What causes this issue?

The maximum key length for entity types with
<DS:DE.USMD_USAGE_TYPE>storage and use type</> <LS>1</> is 38
characters. (This includes entity types that are directly or indirectly
taken into account due to relationships of the type <LS>leading</>.)
The maximum key length for entity types with storage and use type <LS>2
</> is also 38 characters if they are used as additional entity types
with the usage <LS>Hierachy Names</>. (This includes entity types that
are directly or indirectly taken into account due to relationships of
the type <LS>leading</>.)
This prerequisite is <ZH>not</> fulfilled for entity type &V2&.

System Response

The data model cannot be saved or activated.

How to fix this error?

Change the settings for the data element and the assigned entity types
so that the entire key does not exceed 38 characters.

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.