How To Fix M8404 - System error when accessing purchase order &

SAP Error Message - Details

• Message type: E = Error

• Message class: M8 - Invoice Verification/Valuation

• Message number: 404

• Message text: System error when accessing purchase order &

What causes this issue?

An error was found when the system tried to access the purchase
order. The error was due to one of the following reasons:
- the purchase order has been deleted
- the order category is wrong
- the purchase order does not exist.

System Response

The system terminates the PO selection process.

How to fix this error?

In all of the above cases, you should inform your systems
administrator. The error may be due to wrong or incomplete matchcodes
(M_MEKKD). In this case, the matchcodes should be restructured.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M8404 - System error when accessing purchase order & ?

  The SAP error message M8404, which indicates a "System error when accessing purchase order," typically arises due to issues related to data inconsistencies, system configuration, or temporary system problems. Here are some potential causes, solutions, and related information for this error:
  Causes:
  
  Data Inconsistencies: There may be inconsistencies in the database related to the purchase order, such as missing or corrupted data.
  Authorization Issues: The user may not have the necessary authorizations to access the purchase order.
  System Configuration: Incorrect configuration settings in the SAP system can lead to errors when trying to access certain transactions.
  Temporary System Issues: Sometimes, the error can be due to temporary issues with the SAP system, such as performance problems or system downtime.
  Database Issues: Problems with the underlying database, such as locks or corruption, can also lead to this error.
  
  Solutions:
  
  
  Check Data Consistency:
  
  Use transaction codes like SE11 (Data Dictionary) or SE16 (Data Browser) to check the relevant tables for inconsistencies.
  Run