How To Fix ESH_OM_OBJ_MODEL_REP738 - Objects starting with Y or Z cannot be created in SAP software component

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_OM_OBJ_MODEL_REP - Object Model Repository

• Message number: 738

• Message text: Objects starting with Y or Z cannot be created in SAP software component

What causes this issue?

Template &v1& is in the customer namespace, therefore it can only be
created in a software component that is also in the customer namespace
(starting with Y or Z).

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?

Create or use an existing software component starting with Y or Z.
Including SAP software components makes it possible to reference their
templates.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message ESH_OM_OBJ_MODEL_REP738 - Objects starting with Y or Z cannot be created in SAP software component ?

  The SAP error message ESH_OM_OBJ_MODEL_REP738 indicates that objects starting with the letters "Y" or "Z" cannot be created in the SAP software component. This restriction is typically in place to prevent conflicts with standard SAP objects, as SAP reserves these prefixes for customer-specific developments.
  Cause:
  
  Naming Convention: In SAP, objects that start with "Y" or "Z" are generally reserved for custom developments. The error occurs when there is an attempt to create or register an object (like a class, function module, or other repository objects) that begins with these prefixes in a context where it is not allowed.
  Software Component Restrictions: Certain software components or packages may have restrictions on the naming of objects to maintain integrity and avoid conflicts with standard SAP objects.
  
  Solution:
  
  Rename the Object: The most straightforward solution is to rename the object you are trying to create. Instead of starting with "Y" or "Z", use a different prefix or naming convention that complies with the restrictions of the software component.
  Check Configuration: Review the configuration settings of the software component to see if there are any specific rules or settings that can be adjusted to allow for the creation of objects with these prefixes.
  Consult Documentation: Refer to the SAP documentation or notes related to the specific software component you are working with. There may be additional guidelines or best practices regarding object naming conventions.
  Contact SAP Support: If you believe that the restriction is causing issues in your development process, consider reaching out to SAP support for further assistance or clarification on the matter.
  
  Related Information:
  
  SAP Naming Conventions: Familiarize yourself with SAP's naming conventions for custom objects. This can help avoid similar issues in the future.
  Development Guidelines: Review the development guidelines provided by SAP for the specific software component you are working with, as they may contain important information regarding object creation and naming.
  Transport Management: If you are working in a transport environment, ensure that the naming conventions are consistent across development, quality assurance, and production systems to avoid transport issues.
  
  By following these steps, you should be able to resolve the error and continue with your development work in SAP.