How To Fix GI171 - Period not defined (Ld &, CoID &, FY var. &)

GI171 - Overview

• Message type: E = Error

• Message class: GI - FI-SL update

• Message number: 171

• Message text: Period not defined (Ld &, CoID &, FY var. &)

What causes this issue?

The system could not determine a posting period with this posting date.

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?

Check the posting period definition (T009A/T009B).

Error message extract from SAP system. Copyright SAP SE.

GI171 - Details

• The SAP error message GI171 "Period not defined (Ld &, CoID &, FY var. &)" typically occurs in the context of financial reporting or when trying to post transactions in a specific period that has not been defined in the system. This error can arise in various modules, including Financial Accounting (FI) and Controlling (CO).
  
  Cause:
  
  Period Not Open: The fiscal period you are trying to access is not open for posting. This can happen if the period is closed in the configuration settings.
  Incorrect Fiscal Year Variant: The fiscal year variant assigned to the company code may not have the specified period defined.
  Missing Configuration: The period may not be defined in the controlling area or the fiscal year variant settings.
  Posting Date Issues: The posting date of the transaction may fall outside the defined periods.
  
  
  Solution:
  
  
  Check Period Status:
  
  Go to the transaction code OB52 (Change Posting Periods) to check if the period is open for