How To Fix SDDIC_ADT_DDLA012 - You may not define a default value for reference types

SAP Error Message - Details

• Message type: E = Error

• Message class: SDDIC_ADT_DDLA - Messages for Annotation Definition Design Time

• Message number: 012

• Message text: You may not define a default value for reference types

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SDDIC_ADT_DDLA012 - You may not define a default value for reference types ?

  The SAP error message SDDIC_ADT_DDLA012 indicates that you are trying to define a default value for a reference type in a data dictionary object, which is not allowed in SAP ABAP. Reference types in ABAP are used to point to objects rather than holding data directly, and as such, they cannot have default values assigned to them.
  Cause:
  The error occurs when you attempt to set a default value for a reference type in a data dictionary object (like a table, structure, or data element). Reference types include class references, interface references, and other object references. Since these types do not hold actual data but rather point to instances of objects, assigning a default value is not applicable.
  Solution:
  To resolve this error, you should remove the default value assignment for the reference type. Here are the steps you can take:
  
  
  Identify the Data Element or Structure: Locate the data element or structure where you are trying to set the default value.
  
  
  Remove Default Value: In the definition of the data element or structure, find the section where the default value is defined and remove it. 
  
  
  Use Initialization Instead: If you need to initialize a reference type, consider doing so in the ABAP code after the declaration. For example, you can initialize a reference variable to NULL or create a new instance of the object in your ABAP program.
  DATA: ref TYPE REF TO my_class.
  CREATE OBJECT ref.
  
  
  Check for Other Errors: After making the changes, check for any other potential errors in your data dictionary object.
  
  
  Related Information:
  
  Reference Types: In ABAP, reference types are used to refer to instances of classes or interfaces. They are defined using the TYPE REF TO syntax.
  Data Dictionary: The SAP Data Dictionary (DDIC) is a central repository that contains metadata about the data used in the SAP system, including tables, views, data elements, domains, and more.
  ABAP Programming: Understanding how to work with reference types and object-oriented programming in ABAP is crucial for effective development in SAP environments.
  
  By following these steps, you should be able to resolve the error and continue with your development work in SAP.