How To Fix 8A128 - Date error: Document date &1 inconsistent with last-assigned date &2

8A128 - Overview

• Message type: E = Error

• Message class: 8A - Messages for Argentina

• Message number: 128

• Message text: Date error: Document date &1 inconsistent with last-assigned date &2

What causes this issue?

The date that was entered for the document is earlier than the last
assigned date of the official document number.
To generate an official document number with date control, enter a
document date that is later than the last assigned date of the official
document number.

System Response

The system will not allow you to post this document.

How to fix this error?

Ensure that the date in the document is filled correctly.

Error message extract from SAP system. Copyright SAP SE.

8A128 - Details

• The SAP error message 8A128 indicates a date inconsistency issue in the system. Specifically, it means that the document date you are trying to enter is inconsistent with the last-assigned date for the relevant document type or transaction. This can occur in various SAP modules, such as Financial Accounting (FI) or Controlling (CO), where date integrity is crucial for accurate reporting and processing.
  
  Cause:
  
  Document Date vs. Last Assigned Date: The document date you are trying to enter is earlier or later than the last assigned date for that document type. This can happen if there are restrictions on the posting periods or if the document date falls outside the allowed range.
  Posting Periods: The posting period may be closed, or the document date may not fall within the open posting periods defined in the system.
  Configuration Settings: There may be specific configuration settings in the document type or company code that restrict the