How To Fix ME637 - & & already confirmed (Adjust schedule line quantity)

ME637 - Overview

• Message type: E = Error

• Message class: ME - Purchasing: General Messages

• Message number: 637

• Message text: & & already confirmed (Adjust schedule line quantity)

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 ME637 - & & already confirmed (Adjust schedule line quantity) ?

  The SAP error message ME637, which states "Already confirmed (Adjust schedule line quantity)," typically occurs in the context of materials management and procurement processes, particularly when dealing with purchase orders and schedule lines. This error indicates that there is an attempt to adjust the quantity of a schedule line that has already been confirmed, which is not allowed.
  
  Cause:
  
  Confirmed Schedule Line: The schedule line for a purchase order item has already been confirmed, meaning that the system has already processed the quantity for that line.
  Quantity Adjustment Attempt: An attempt is being made to change the quantity of a schedule line that is already confirmed, which violates the system's rules for handling confirmed quantities.
  System Settings: Certain configurations in the system may restrict changes to confirmed schedule lines.
  
  
  Solution:
  
  Check Confirmation Status: Verify the confirmation status of the schedule line. If it is confirmed, you may need to reverse or cancel the confirmation before making