How To Fix W8123 - '&1' is not an attribute of '&2' - use the F4 input help

SAP Error Message - Details

• Message type: E = Error

• Message class: W8 - Workflow: Expressions, data flow

• Message number: 123

• Message text: '&1' is not an attribute of '&2' - use the F4 input help

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message W8123 - '&1' is not an attribute of '&2' - use the F4 input help ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  W8123 '&1' is not an attribute of '&2' - use the F4 input help
  
  Meaning / Cause:
  This warning message occurs when you try to reference or use a field (attribute) &1 that does not belong to the specified structure, table, or object &2. In other words, the system cannot find the attribute/field name you entered in the context of the given data object.
  Common scenarios include:
  
  Typing a field name manually that does not exist in the data dictionary object.
  Using a field in a selection screen, report, or query that is not part of the underlying table or structure.
  Incorrectly referencing a field in ABAP code or in a query where the field is not defined.
  Trying to use a field in a CDS view or data source that is not part of the entity.
  
  
  Explanation:
  
  &1 = The field/attribute name you tried to use.
  &2 = The data object (table, structure, view, etc.) where the field was expected.
  
  The system suggests using the F4 input help to select the correct attribute name from the list of valid fields. This helps avoid typos or incorrect field references.
  
  How to Solve / Workaround:
  
  
  Use F4 Help:
  
  When entering the field name, press F4 to get a list of valid attributes for the given object.
  Select the correct field from the list instead of typing it manually.
  
  
  
  Check Data Dictionary:
  
  Verify that the field &1 actually exists in the table or structure &2.
  Use transaction SE11 to display the table/structure and confirm the field name.
  
  
  
  Correct the Field Name:
  
  If the field name is misspelled, correct it.
  If the field does not exist, either add it (if possible) or use a valid field.
  
  
  
  Adjust the Program or Query:
  
  If you are coding, ensure that the field you reference is part of the data object.
  If you are creating a query or report, make sure the field is included in the data source.
  
  
  
  Check for Alias or Field Mapping:
  
  Sometimes fields are renamed or aliased in views or CDS entities. Make sure you use the correct alias.
  
  
  
  
  Additional Information:
  
  This is a warning message (W8123), so it may not stop processing but indicates a potential problem.
  Ignoring this warning may lead to runtime errors or incorrect data retrieval.
  Always use the F4 help to avoid such issues.
  This message is common in ABAP development, SAP Query, CDS views, and report creation.
  
  
  Example:
  If you have a table MARA and you try to use a field MATNRR (note the extra 'R'), the system will show:
  W8123 'MATNRR' is not an attribute of 'MARA' - use the F4 input help
  Because the correct field name is MATNR.
  
  If you need help with a specific context (e.g., ABAP code, query, CDS view), please provide more details!