How To Fix NAA199 - Proposed date "31.12.9999" does not make sense (see long text)

NAA199 - Overview

• Message type: E = Error

• Message class: NAA - Subsequent settlement (Purchasing)

• Message number: 199

• Message text: Proposed date "31.12.9999" does not make sense (see long text)

What causes this issue?

If possible, do not create arrangements with a validity period of more
than one year.
For certain functions (detailed statement, recompilation of business
volume data, retrospective business volume update), the system needs
all the documents for the arrangement. These should not be archived at
this time.
If the arrangement has a long validity period, a very large number of
documents may be involved (performance problems). Processing also
becomes much more complex.
As a rule, it does not make business sense to accumulate business
volumes over periods longer than the current fiscal year.

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 possible, create arrangements with shorter validity periods.
For arrangements that are to be valid for longer periods, use the
extension function (see documentation). Here, you create a separate
arrangement for each (fiscal) year.

Procedure for System Administrators

The complete document data must be kept available on the database for
the duration of the arrangement.

Error message extract from SAP system. Copyright SAP SE.

NAA199 - Details

• The SAP error message NAA199, which states "Proposed date '31.12.9999' does not make sense," typically occurs in the context of date handling within SAP applications, particularly in modules related to project management, asset management, or similar areas where date inputs are critical.
  
  Cause:
  
  Invalid Date Input: The date "31.12.9999" is often used as a placeholder or default value in SAP systems. However, it is not a valid date for processing in many business scenarios, as it is far in the future and may not be acceptable for certain calculations or business logic.
  
  Configuration Issues: The system may be configured to reject dates that are too far in the future, which can lead to this error.
  Data Entry Errors: Users may inadvertently enter this date due to copy-pasting or incorrect data entry.
  
  
  Solution:
  
  Change the Date: Review the date field where this error occurs and replace "31.12.9999" with a valid date that makes sense in the context