How To Fix /PLMI/MBOM_MAP_29123 - Subitem number has already been assigned

/PLMI/MBOM_MAP_29123 - Overview

• Message type: E = Error

• Message class: /PLMI/MBOM_MAP_29 -

• Message number: 123

• Message text: Subitem number has already been assigned

Self-Explanatory Message

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/PLMI/MBOM_MAP_29123 - Details

• The SAP error message /PLMI/MBOM_MAP_29123 indicates that there is an issue with the assignment of subitem numbers in the context of a Manufacturing Bill of Materials (MBOM). This error typically occurs when you are trying to assign a subitem number that has already been used for another component or item in the same context.
  
  Cause:
  
  Duplicate Subitem Assignment: The most common cause of this error is that the subitem number you are trying to assign is already in use for another component in the same MBOM or related structure.
  Data Entry Error: It may also occur due to a manual data entry error where the same subitem number is mistakenly entered for multiple components.
  System Configuration: There could be issues related to system configuration or settings that prevent the assignment of subitem numbers correctly.
  
  
  Solution:
  
  Check Existing Assignments: Review the existing MBOM to see which components are already using the subitem number you are trying to