How To Fix MDU019 - Group &3 (lot &1, appl. &2) exists already


MDU019 - Overview

  • Message type: E = Error

  • Message class: MDU - Master Data Update: Master Data Lot

  • Message number: 019

  • Message text: Group &3 (lot &1, appl. &2) exists already

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  • Self-Explanatory Message

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    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 MDU019 - Group &3 (lot &1, appl. &2) exists already ?
    The SAP error message MDU019 indicates that a group (identified by &3) already exists for a specific lot (identified by &1) and application (identified by &2). This error typically occurs in the context of material management or production planning when trying to create or modify a group that is already defined in the system.
    
    Cause: The error is triggered when there is an attempt to create a new group for a lot and application combination that already exists in the database. This can happen due to: Duplicate entries being created inadvertently. An attempt to reassign or modify an existing group without proper checks. Data inconsistencies or issues in the master data.
    Solution: To resolve the MDU019 error, you can take the following steps: Check Existing Groups: Use transaction codes like MD04 (Stock/Requirements List) or MDM1 (Create Material Master) to check if the group already exists for the specified lot and application. Review the existing entries to confirm if the

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