How To Fix DO858 - &: Explicit key specification not allowed (row type unstructured)

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 858

• Message text: &: Explicit key specification not allowed (row type unstructured)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DO858 - &: Explicit key specification not allowed (row type unstructured) ?

  The SAP error message DO858, which states "Explicit key specification not allowed (row type unstructured)," typically occurs in the context of ABAP programming, particularly when dealing with internal tables and their structures. This error indicates that there is an attempt to specify a key for an internal table that is defined as "unstructured," meaning it does not have a defined key.
  Cause:
  
  Unstructured Table Definition: The internal table is defined without a key, which means it is treated as an unstructured table. In such cases, you cannot explicitly specify a key for operations like sorting or accessing elements.
  Incorrect Use of Key Specification: The code may be trying to use a key specification in a context where it is not allowed, such as when defining a table or performing operations on an unstructured table.
  
  Solution:
  
  
  Define a Structured Table: If you need to use keys, redefine the internal table to be structured. This can be done by specifying a key in the table definition. For example:
  DATA: lt_table TYPE SORTED TABLE OF your_structure WITH UNIQUE KEY your_key_field.
  Replace your_structure with the appropriate structure and your_key_field with the field(s) you want to use as a key.
  
  
  Remove Key Specification: If the table does not need a key, ensure that you are not trying to specify one in your operations. Review the code to remove any key specifications related to the unstructured table.
  
  
  Check Table Operations: Ensure that any operations you are performing on the internal table (like sorting, reading, or modifying) are appropriate for the type of table you have defined.
  
  
  Related Information:
  
  Internal Tables in ABAP: Understanding the difference between structured and unstructured internal tables is crucial. Structured tables have defined keys, while unstructured tables do not.
  ABAP Documentation: Refer to the official SAP documentation for more details on internal tables, their definitions, and how to work with them effectively.
  Debugging: Use the ABAP debugger to step through the code and identify where the error is being triggered. This can help you understand the context and make necessary adjustments.
  
  By addressing the definition and usage of the internal table in your ABAP code, you should be able to resolve the DO858 error.