How To Fix M8370 - You cannot switch to preliminary posting

SAP Error Message - Details

• Message type: E = Error

• Message class: M8 - Invoice Verification/Valuation

• Message number: 370

• Message text: You cannot switch to preliminary posting

What causes this issue?

You chose the function <LS>Switch to preliminary posting</>. However,
the document contains several items for delivery costs referencing the
same condition in a purchase order.
Such a document cannot be processed any further in preliminary posting
mode.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

If you definitely wish to park the document, you must first cancel
creating the invoice and go directly to preliminary posting.
The delivery costs can only be copied to one item in the document.
This can be done via <LS>Edit ->
Delivery costs -> Planned -> By purchase order</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M8370 - You cannot switch to preliminary posting ?

  The SAP error message M8370, "You cannot switch to preliminary posting," typically occurs in the context of inventory management or material document processing. This error indicates that the system is unable to switch the posting mode to "preliminary" due to certain conditions not being met.
  Causes:
  
  
  Document Status: The document you are trying to post may already be in a status that does not allow for preliminary posting. For example, if the document has already been fully posted or if it is in a status that requires final posting.
  
  
  Configuration Settings: The system configuration may not allow preliminary postings for certain types of transactions or materials. This could be due to settings in the material management (MM) module or specific company code settings.
  
  
  User Authorizations: The user may not have the necessary authorizations to perform preliminary postings. This can be checked in the user roles and authorizations assigned to the user.
  
  
  Transaction Type Restrictions: Certain transaction types may not support preliminary postings based on the business process or configuration.
  
  
  Solutions:
  
  
  Check Document Status: Verify the status of the document you are trying to post. If it is already fully posted, you may need to reverse it or create a new document.
  
  
  Review Configuration: Consult with your SAP configuration team to review the settings related to preliminary postings in the material management module. Ensure that the configuration allows for preliminary postings where necessary.
  
  
  User Authorizations: Check the user roles and authorizations to ensure that the user has the necessary permissions to perform preliminary postings. If not, the user may need to be granted additional authorizations.
  
  
  Transaction Type: Ensure that the transaction type you are using supports preliminary postings. If it does not, you may need to use a different transaction type or adjust the process.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for more specific guidance related to the error message and the context in which it occurs.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP Notes can provide specific fixes or workarounds.
  Transaction Codes: Familiarize yourself with relevant transaction codes in SAP that may help in troubleshooting or resolving the issue (e.g., MB1A, MB1B, MB1C for material postings).
  Support: If the issue persists, consider reaching out to SAP support or your internal SAP support team for further assistance.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.