How To Fix DMEE811 - Node &1, line &2: Invalid operation for selected variable type

SAP Error Message - Details

• Message type: E = Error

• Message class: DMEE - Messages for Data Medium Exchange Engine

• Message number: 811

• Message text: Node &1, line &2: Invalid operation for selected variable type

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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 DMEE811 - Node &1, line &2: Invalid operation for selected variable type ?

  The SAP error message DMEE811 indicates that there is an issue with the configuration of the Data Medium Exchange Engine (DMEE) in SAP. Specifically, it points to an invalid operation being performed on a variable that is not compatible with the selected variable type in the DMEE tree structure.
  Cause:
  The error typically arises due to one of the following reasons:
  
  Incorrect Variable Type: The operation you are trying to perform on a variable does not match the expected type. For example, you might be trying to perform a mathematical operation on a string variable.
  Misconfiguration in DMEE Tree: The DMEE tree structure may have been incorrectly configured, leading to operations that are not valid for the specified node.
  Data Type Mismatch: There may be a mismatch between the expected data type of a variable and the actual data type being used in the operation.
  
  Solution:
  To resolve the DMEE811 error, you can follow these steps:
  
  
  Check the DMEE Configuration:
  
  Open the DMEE tree in transaction code DMEE.
  Navigate to the node specified in the error message (Node &1) and line number (Line &2).
  Review the operations defined for that node and ensure that they are appropriate for the variable type.
  
  
  
  Verify Variable Types:
  
  Ensure that the variable types used in the operations are compatible. For example, if you are performing arithmetic operations, make sure the variables involved are of numeric types.
  
  
  
  Adjust Operations:
  
  If you find that an operation is not valid for the variable type, modify the operation or change the variable type to match the expected type.
  
  
  
  Test the Configuration:
  
  After making changes, test the DMEE configuration to ensure that the error no longer occurs. You can do this by generating the output file again.
  
  
  
  Consult Documentation:
  
  If you are unsure about the correct variable types or operations, refer to the SAP documentation for DMEE or consult with a colleague who has experience with DMEE configurations.
  
  
  
  Related Information:
  
  Transaction Codes: DMEE (Data Medium Exchange Engine), SE11 (Data Dictionary), SE37 (Function Modules).
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to DMEE configurations.
  Community Forums: Consider visiting SAP Community forums or other SAP-related discussion platforms for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify and resolve the cause of the DMEE811 error in your SAP system.