How To Fix IO899 - You must select exactly & serial numbers (instead of &)

IO899 - Overview

• Message type: E = Error

• Message class: IO - Plant Maintenance: Object List

• Message number: 899

• Message text: You must select exactly & serial numbers (instead of &)

Self-Explanatory Message

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IO899 - Details

• The SAP error message IO899 indicates that a user is trying to perform an action that requires a specific number of serial numbers to be selected, but the user has either selected too few or too many. The message typically appears in scenarios involving inventory management, production orders, or equipment management where serial numbers are used to track individual items.
  
  Cause:
  The error occurs when:
  
  The system expects a specific number of serial numbers to be selected for a transaction (e.g., goods movement, confirmation of production orders, etc.).
  The user has not selected the required number of serial numbers, either selecting none or selecting more than expected.
  
  
  Solution:
  To resolve this error, follow these steps:
  
  
  Check Requirements: Review the transaction or process you are trying to execute to understand how many serial numbers are required. This information is usually specified in the documentation or the transaction screen.
  
  
  Select Correct Number of Serial Numbers:
  
  If you have not selected any