How To Fix FF799 - System error: &

FF799 - Overview

• Message type: E = Error

• Message class: FF - FI Function Module Messages

• Message number: 799

• Message text: System error: &

What causes this issue?

When calculating the taxes, an internal error occurred. The name of the
routine is stated in the error message.
If the error comes from the Routine LTAX1U04, the cause can be an
incorrectly maintained tax code. Check whether the tax code is
maintained correctly, in particular that the base values are defined
for the individual levels so that actual values can also be calculated.
Example of an incorrect definition:
Tax category Tax rate Level From level
Base amount 100 000
Output tax 10.000 300 200
Since a tax rate does not exist for level 200, the output tax cannot be
calculated.

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?

Before you attempt to analyze the program, check the tax calculation
procedure you used for accuracy. Check whether the tax code used is
allocated to the correct tax type and whether a valid base value is
allocated to this tax type.
If you cannot solve the problem, consult your system administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FF799 - System error: & ?

  The SAP error message FF799, which states "System error: &", is a generic error message that indicates a system-level issue. This error can occur in various contexts, often related to financial transactions, such as payment processing or bank statement processing in the SAP Financial Accounting (FI) module.
  Possible Causes:
  
  
  Configuration Issues: Incorrect configuration in the payment processing settings or bank account settings.
  Data Inconsistencies: Missing or inconsistent data in the relevant master data (e.g., vendor, customer, or bank master data).
  System Bugs: There may be bugs or issues in the SAP system that need to be addressed through patches or updates.
  Authorization Issues: Lack of proper authorizations for the user trying to perform the transaction.
  Technical Issues: Problems with the underlying database or application server, such as connectivity issues or resource limitations.
  
  Solutions:
  
  Check Configuration: Review the configuration settings related to payment processing and ensure they are set up correctly.
  Validate Master Data: Ensure that all relevant master data