How To Fix /PLMI/MBOM_MAP_29190 - Unit calculated for variable-size item not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: /PLMI/MBOM_MAP_29 -

• Message number: 190

• Message text: Unit calculated for variable-size item not possible

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /PLMI/MBOM_MAP_29190 - Unit calculated for variable-size item not possible ?

  The SAP error message /PLMI/MBOM_MAP_29190 typically indicates an issue related to the calculation of units for variable-size items in the context of a Manufacturing Bill of Materials (MBOM). This error can occur in scenarios where the system is unable to determine a valid unit of measure for an item that has variable dimensions or sizes.
  Cause:
  
  Variable-Size Item Configuration: The item in question may be configured as a variable-size item, but the system lacks the necessary data to calculate the unit of measure.
  Missing or Incorrect Master Data: The material master data for the variable-size item may be incomplete or incorrectly configured, particularly in the areas related to units of measure or dimensions.
  Inconsistent BOM Data: The Bill of Materials (BOM) may have inconsistencies or missing information that prevents the system from calculating the required unit.
  Unit of Measure Settings: The settings for units of measure in the material master or BOM may not be properly defined, leading to calculation issues.
  
  Solution:
  
  Check Material Master Data: Review the material master data for the variable-size item. Ensure that all relevant fields, especially those related to units of measure and dimensions, are correctly filled out.
  Review BOM Configuration: Check the BOM for the item to ensure that all components are correctly defined and that there are no missing or inconsistent entries.
  Define Units of Measure: Ensure that the units of measure for the variable-size item are properly defined in the system. This includes checking the conversion factors and ensuring that they are appropriate for the item.
  Consult SAP Notes: Look for any relevant SAP Notes that may address this specific error. SAP frequently releases updates and patches that can resolve known issues.
  Testing and Validation: After making changes, perform tests to validate that the error no longer occurs. This may involve creating a new BOM or processing the variable-size item again to see if the issue is resolved.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for detailed information on configuring variable-size items and managing BOMs.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CS01 (Create BOM), CS02 (Change BOM), and MM02 (Change Material) to navigate and make necessary adjustments in the system.
  
  If the issue persists after following these steps, it may be beneficial to consult with an SAP expert or your organization's SAP support team for further assistance.