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.

Smart SAP Assistant

• What is the cause and solution for SAP error message USMD1034 - Data model &1, entity type &2: Entire key is too long ?

  The SAP error message USMD1034 indicates that the entire key for a specific data model and entity type is too long. This error typically occurs in the context of SAP Master Data Governance (MDG) when working with data models and entity types that have defined keys.
  Cause:
  The error is caused by the key length exceeding the maximum allowed limit. In SAP, there are restrictions on the length of keys for various data models and entity types. If the combined length of the key fields exceeds this limit, the system will throw this error.
  Solution:
  To resolve the USMD1034 error, you can take the following steps:
  
  
  Review Key Fields: Check the key fields defined for the entity type in the data model. Identify which fields are part of the key and their respective lengths.
  
  
  Reduce Key Length: If possible, consider reducing the number of fields that are part of the key. This may involve:
  
  Removing non-essential fields from the key.
  Using shorter field types or abbreviations if applicable.
  
  
  
  Modify Data Model: If the data model allows, you may need to modify the data model to accommodate a shorter key. This could involve changing the design of the data model or the entity type.
  
  
  Consult Documentation: Refer to the SAP documentation for the specific data model and entity type to understand the key length limitations and best practices.
  
  
  Testing: After making changes, test the data model to ensure that the error is resolved and that the data integrity is maintained.
  
  
  Seek Help: If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting with an SAP expert who can provide guidance based on your specific configuration and requirements.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or solutions related to this error.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can share their experiences and solutions.
  Data Model Design: Familiarize yourself with best practices for designing data models in SAP MDG to avoid similar issues in the future.
  
  By following these steps, you should be able to address the USMD1034 error effectively.