How To Fix LTR2_BASIS_CHECK209 - A child data model can have either internal or external links to parents

SAP Error Message - Details

• Message type: E = Error

• Message class: LTR2_BASIS_CHECK - LTR2 Messages of Checks in Check Framework

• Message number: 209

• Message text: A child data model can have either internal or external links to parents

What causes this issue?

The current data model is a child of another data model in the same
business object. The dependency between the two data models is defined
by an internal link. In this case, it is not allowed for the child data
model to have another parent-child relationship with a parent data model
in another business object (external link).

How to fix this error?

Please follow these steps to circumvent the modelling restriction:
Create a new business object.
Recreate the child data model from the current business object in the
new business object. Keep in mind that all links that were previously
internal must now be external.
Add the required external links to the data model in the new business
object.
If you have added the original business object to an embedded
specification, then please deactivate the current data model.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message LTR2_BASIS_CHECK209 - A child data model can have either internal or external links to parents ?

  The SAP error message LTR2_BASIS_CHECK209 indicates that there is an issue with the configuration of a child data model in relation to its parent data model. Specifically, this error arises when a child data model is incorrectly set up to have both internal and external links to its parent, which is not allowed.
  Cause:
  The error occurs due to the following reasons:
  
  Mixed Link Types: The child data model is configured to have both internal links (links that refer to other objects within the same data model) and external links (links that refer to objects in different data models or systems).
  Data Model Configuration: The configuration settings for the child data model may not be aligned with the requirements of the parent data model, leading to inconsistencies.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review Data Model Configuration:
  
  Check the configuration of the child data model to identify the types of links that are currently set up.
  Ensure that the child data model is configured to use either internal links or external links, but not both.
  
  
  
  Modify Link Types:
  
  If the child data model is intended to use internal links, remove any external links.
  Conversely, if external links are required, ensure that all internal links are removed.
  
  
  
  Validate Relationships:
  
  Ensure that the relationships between the child and parent data models are correctly defined and that they adhere to the rules of the data modeling framework you are using.
  
  
  
  Test Changes:
  
  After making the necessary adjustments, test the data model to ensure that the error no longer occurs and that the data model functions as expected.
  
  
  
  Documentation and Best Practices:
  
  Refer to SAP documentation or best practices for data modeling to ensure that your configurations align with recommended guidelines.
  
  
  
  Related Information:
  
  SAP Documentation: Check the official SAP Help Portal for detailed information on data modeling and error messages.
  Community Forums: Engage with SAP community forums or support channels for additional insights and solutions from other users who may have encountered similar issues.
  Data Model Design Principles: Familiarize yourself with the principles of data model design to avoid similar issues in the future.
  
  By following these steps, you should be able to resolve the error and ensure that your data models are correctly configured.