How To Fix QA420 - Inspection Lot &1: Serial Number &2 does not exist yet

SAP Error Message - Details

• Message type: E = Error

• Message class: QA - QM : Inspection lots

• Message number: 420

• Message text: Inspection Lot &1: Serial Number &2 does not exist yet

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.

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message QA420 - Inspection Lot &1: Serial Number &2 does not exist yet ?

  The SAP error message QA420 indicates that there is an issue with an inspection lot and a serial number. Specifically, it means that the system cannot find the specified serial number associated with the inspection lot. Here’s a breakdown of the cause, potential solutions, and related information:
  
  Cause:
  
  Serial Number Not Created: The serial number referenced in the inspection lot has not been created or recorded in the system.
  Incorrect Serial Number: The serial number entered may be incorrect or mistyped.
  Inspection Lot Status: The inspection lot may be in a status that does not allow for the processing of serial numbers.
  Data Synchronization Issues: There may be a delay or issue in data synchronization between different modules or systems.
  
  Configuration Issues: The configuration settings for serial number management or inspection lot processing may not be set up correctly.
  
  Solutions:
  
  Verify Serial Number: Check if the serial number exists in the system. You can do this by navigating