How To Fix DO852 - Key/Index contains a table (component & of row type)

SAP Error Message - Details

• Message type: E = Error

• Message class: DO - Dictionary: Mass activation of domains and data elements

• Message number: 852

• Message text: Key/Index contains a table (component & of row type)

What causes this issue?

The <DS:TX.DDDOC_KEYDEF>key</> of a table type may not be a table or a
structure containing tables.
You defined row type as the key of the table type, but the row type
contains a component that is a table. This means it has a table type or
a structured component containing tables as type.

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?

Choose another key or a <DS:TX.DDDOC_ROWTYPE>row type</> that does not
contain tables. Alternatively you can adjust the row type by removing
the table from the given component.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DO852 - Key/Index contains a table (component & of row type) ?

  The SAP error message DO852 indicates that there is an issue with a key or index that contains a table (component) of a row type. This typically occurs in the context of ABAP programming, particularly when dealing with internal tables and data structures.
  Cause:
  The error usually arises in the following scenarios:
  
  Data Structure Definition: You may have defined a data structure (or a table type) that includes a component which is itself a table or an internal table. In ABAP, you cannot use an internal table as a component of another table or structure directly.
  Incorrect Use of Data Types: The data type of a field in a structure or table is not compatible with the expected data type, leading to confusion in the data model.
  Indexing Issues: If you are trying to create an index on a field that is a table type, it will lead to this error.
  
  Solution:
  To resolve the DO852 error, consider the following steps:
  
  
  Review Data Definitions: Check the definitions of your structures and tables. Ensure that you are not trying to include an internal table as a component of another structure or table.
  
  
  Change Data Types: If you need to include a table-like structure, consider using a different approach, such as:
  
  Using a nested structure that contains fields instead of an internal table.
  Using a reference to an internal table instead of trying to include it directly.
  
  
  
  Refactor Code: If the error occurs in your ABAP code, refactor the code to avoid using internal tables as components of other structures. Instead, manage the internal tables separately and use references or pointers if necessary.
  
  
  Check Index Definitions: If you are trying to create an index on a field that is a table type, remove that index or change the field to a compatible type.
  
  
  Related Information:
  
  ABAP Data Types: Familiarize yourself with the different data types in ABAP, especially the differences between elementary types, structures, and internal tables.
  SAP Documentation: Refer to the official SAP documentation for guidelines on defining data structures and internal tables.
  Debugging: Use the ABAP debugger to trace where the error occurs in your code, which can help you identify the problematic data structure or index.
  
  By following these steps, you should be able to resolve the DO852 error and ensure that your data structures are defined correctly in your ABAP programs.