How To Fix MW166 - Rounding indicator (&) is of wrong type (&)

SAP Error Message - Details

• Message type: E = Error

• Message class: MW - Messages IS-R / Allocation Tables

• Message number: 166

• Message text: Rounding indicator (&) is of wrong type (&)

What causes this issue?

Value &V2& is not allowed for the rounding indicator.

System Response

INCLUDE ISR_VERARBEITUNG

How to fix this error?

INCLUDE ISR_SYSTEMFEHLER

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MW166 - Rounding indicator (&) is of wrong type (&) ?

  The SAP error message MW166, which states "Rounding indicator (&) is of wrong type (&)," typically occurs in the context of material management and inventory management processes, particularly when dealing with rounding rules for quantities or amounts in transactions.
  Cause:
  The error is usually caused by one of the following issues:
  
  
  Incorrect Rounding Indicator: The rounding indicator specified in the transaction or configuration does not match the expected type. For example, it may be expecting a specific format or type of rounding indicator that is not being provided.
  
  
  Configuration Issues: There may be a misconfiguration in the material master data or in the settings related to the rounding rules in the system.
  
  
  Data Entry Errors: Users may have entered an invalid rounding indicator in the transaction, leading to this error.
  
  
  Custom Development: If there are custom programs or enhancements in place, they may not be handling rounding indicators correctly.
  
  
  Solution:
  To resolve the MW166 error, you can take the following steps:
  
  
  Check Rounding Indicator: Verify the rounding indicator being used in the transaction. Ensure that it is valid and corresponds to the expected type. You can refer to the documentation or configuration settings to confirm the correct values.
  
  
  Review Material Master Data: Check the material master data for the relevant material. Ensure that the rounding settings are correctly configured. You can do this by navigating to the material master record and reviewing the relevant views (e.g., Basic Data, Purchasing, or Accounting).
  
  
  Configuration Settings: Review the configuration settings related to rounding in the SAP system. This can typically be found in the SPRO transaction under the relevant modules (e.g., Materials Management).
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific details on rounding indicators and their expected formats.
  
  
  Test with Different Data: If possible, try to replicate the issue with different data or in a test environment to see if the problem persists. This can help isolate whether the issue is data-specific or configuration-related.
  
  
  Contact SAP Support: If the issue persists after checking the above points, consider reaching out to SAP support for further assistance. They may provide insights based on the specific version of SAP you are using.
  
  
  Related Information:
  
  Rounding Rules: Understanding how rounding rules work in SAP can help in configuring them correctly. Rounding can be applied to various transactions, including pricing, quantities, and financial postings.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM01 (Create Material), MM02 (Change Material), and MM03 (Display Material) to check material master data.
  SAP Notes: Check for any SAP Notes related to this error message, as they may provide specific fixes or patches that address known issues.
  
  By following these steps, you should be able to identify and resolve the cause of the MW166 error in your SAP system.