How To Fix /SAPMP/PUR020 - Item quantity does not equal the total schedule line quantities

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPMP/PUR -

• Message number: 020

• Message text: Item quantity does not equal the total schedule line quantities

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 /SAPMP/PUR020 - Item quantity does not equal the total schedule line quantities ?

  The SAP error message /SAPMP/PUR020 Item quantity does not equal the total schedule line quantities typically occurs in the context of purchase orders or scheduling agreements. This error indicates a mismatch between the total quantity specified for an item in the purchase order and the sum of the quantities specified in the individual schedule lines for that item.
  Cause:
  
  Quantity Mismatch: The total quantity of the item in the purchase order does not match the sum of the quantities in the schedule lines. For example, if the purchase order specifies a total quantity of 100 units, but the schedule lines only add up to 90 units, this error will occur.
  Changes in Schedule Lines: If schedule lines were modified (added, deleted, or changed) after the purchase order was created, it could lead to discrepancies.
  Incorrect Data Entry: Manual entry errors when creating or modifying purchase orders or schedule lines can lead to this issue.
  Incomplete Data: If schedule lines are not fully populated or if there are missing entries, it can cause the total to be incorrect.
  
  Solution:
  
  Check Schedule Lines: Review the schedule lines for the affected item in the purchase order. Ensure that the total quantity in the schedule lines matches the total quantity specified in the purchase order.
  Adjust Quantities: If there is a discrepancy, adjust the quantities in either the purchase order or the schedule lines to ensure they match. You can do this by:
  
  Modifying the purchase order to reflect the correct total quantity.
  Adjusting the schedule lines to ensure their total matches the purchase order quantity.
  
  
  Recreate Schedule Lines: If the schedule lines are incorrect or corrupted, consider deleting and recreating them to ensure they are accurate.
  Consult Documentation: If you are unsure about the correct quantities, consult with relevant stakeholders (e.g., procurement, inventory management) to confirm the correct quantities.
  Use Transaction Codes: Use transaction codes like ME22N (Change Purchase Order) to make necessary adjustments.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as ME21N (Create Purchase Order), ME22N (Change Purchase Order), and ME23N (Display Purchase Order).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Authorization: Ensure that you have the necessary authorizations to make changes to purchase orders and schedule lines.
  Training and Documentation: Review training materials or documentation related to purchase order processing in SAP to avoid similar issues in the future.
  
  By following these steps, you should be able to resolve the error and ensure that your purchase order and schedule lines are consistent.