How To Fix DDLS_HIER018 - Parameter propagation not allowed.

SAP Error Message - Details

• Message type: E = Error

• Message class: DDLS_HIER - Used for DDL Hierarchies

• Message number: 018

• Message text: Parameter propagation not allowed.

Self-Explanatory Message

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DDLS_HIER018 - Parameter propagation not allowed. ?

  The SAP error message DDLS_HIER018: Parameter propagation not allowed typically occurs in the context of hierarchical data models, particularly when working with ABAP Dictionary objects like views or database tables that involve parameters. This error indicates that there is an issue with how parameters are being propagated in a hierarchical structure, which is not permitted in certain scenarios.
  
  Cause:
  
  
  Hierarchical Structure: The error often arises when you are trying to propagate parameters in a hierarchical structure where it is not allowed. This can happen in scenarios involving hierarchical data models, such as when using certain types of views or when defining relationships between tables.
  
  
  Incorrect Configuration: The configuration of the data model or the way parameters are defined may not support propagation. For example, if you are trying to use parameters in a way that is not compatible with the underlying data structure.
  
  
  Incompatible Data Types: Sometimes, the data types of the parameters being