How To Fix CO644 - Material no. & of sales order not same as material number entered

SAP Error Message - Details

• Message type: E = Error

• Message class: CO - PPC order processing messages

• Message number: 644

• Message text: Material no. & of sales order not same as material number entered

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 CO644 - Material no. & of sales order not same as material number entered ?

  The SAP error message CO644 indicates that there is a mismatch between the material number associated with a sales order and the material number that has been entered in the system. This error typically occurs during the processing of production orders, sales orders, or when trying to create or modify documents that involve materials.
  Cause:
  
  Data Entry Error: The most common cause is a simple typographical error when entering the material number.
  Incorrect Sales Order: The sales order may have been created with a different material number than what is being referenced in the production order or other related documents.
  Material Master Data Issues: There may be inconsistencies in the material master data, such as changes in the material number or the material type.
  Configuration Issues: There could be configuration settings in the system that are causing the mismatch, especially if there are custom developments or enhancements in place.
  
  Solution:
  
  Verify Material Numbers: Check the material number entered against the material number in the sales order. Ensure that they match exactly.
  Check Sales Order: Review the sales order to confirm that it is referencing the correct material number. If necessary, update the sales order to reflect the correct material.
  Review Material Master Data: Ensure that the material master data is consistent and correctly configured. Check for any recent changes that may have affected the material number.
  Consult with IT or SAP Support: If the issue persists, it may be necessary to consult with your IT department or SAP support team to investigate any underlying configuration issues or custom developments that may be causing the error.
  Transaction Codes: Use transaction codes like VA03 (Display Sales Order) to check the sales order details and MM03 (Display Material) to verify the material master data.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CO01 (Create Production Order), CO02 (Change Production Order), and CO03 (Display Production Order) to navigate through the relevant documents.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP Notes can provide additional insights or solutions.
  User Authorization: Ensure that you have the necessary authorizations to view and modify sales orders and material master data.
  Training and Documentation: Review any training materials or documentation related to sales order processing and material management in your organization to ensure compliance with standard procedures.
  
  By following these steps, you should be able to identify and resolve the CO644 error in SAP.