How To Fix DA161 - Row &1: Unknown control structure '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: DA - Dictionary: Compare, distribution, timer, instantiation

• Message number: 161

• Message text: Row &1: Unknown control structure '&2'

What causes this issue?

The specified type of control structure is unknown.

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 a control structure type:
C : Conditionals
T : Table Loop
F : Function Loop
S : Subscheme Call
You can find a description of the control structures in the
documentation for the function module SCHEME_INSTANTIATE.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DA161 - Row &1: Unknown control structure '&2' ?

  The SAP error message DA161, which states "Row &1: Unknown control structure '&2'", typically occurs in the context of data processing or data extraction, particularly when working with data sources or data models in SAP BW (Business Warehouse) or similar environments. This error indicates that the system has encountered a control structure (like a data field or a key figure) that it does not recognize or cannot find in the specified row.
  Causes:
  
  Missing Control Structure: The control structure referenced in the error message may not exist in the data model or InfoProvider.
  Incorrect Configuration: There may be a misconfiguration in the data source or transformation rules that reference the control structure.
  Data Model Changes: If there have been recent changes to the data model (like adding or removing fields), the control structure may have been inadvertently removed or renamed.
  Transport Issues: If the data model was transported from one system to another, there may have been issues during the transport that caused the control structure to be missing.
  Version Mismatch: The version of the data source or InfoProvider may not match the version expected by the data extraction process.
  
  Solutions:
  
  Check Control Structure: Verify that the control structure '&2' exists in the data model. You can do this by checking the relevant InfoObject or InfoProvider in the SAP BW system.
  Review Configuration: Go through the configuration of the data source and transformation rules to ensure that they are correctly set up and that all necessary fields are included.
  Recreate Control Structure: If the control structure is missing, you may need to recreate it or restore it from a backup if it was deleted.
  Transport Validation: If the issue arose after a transport, check the transport logs for errors and ensure that all necessary objects were transported correctly.
  Update Data Model: If there have been changes to the data model, ensure that all dependent objects are updated accordingly.
  Consult Documentation: Refer to SAP documentation or notes related to the specific version of the software you are using for any known issues or patches.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues related to this error message. SAP frequently updates its knowledge base with solutions to common problems.
  Transaction Codes: Use transaction codes like RSA1 (Data Warehousing Workbench) to analyze the data model and check for inconsistencies.
  Debugging: If you have access to debugging tools, you can trace the execution to see where the error is being triggered and gather more context about the issue.
  
  If the problem persists after trying the above solutions, it may be beneficial to reach out to SAP support or consult with a technical expert who specializes in SAP BW or the specific module you are working with.