How To Fix KG304 - You may not leave more than one period blank

SAP Error Message - Details

• Message type: E = Error

• Message class: KG - CO-PA Planning

• Message number: 304

• Message text: You may not leave more than one period blank

What causes this issue?

The valid periods for plan and reference data must correspond.

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?

Leave one period only blank.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KG304 - You may not leave more than one period blank ?

  The SAP error message KG304, "You may not leave more than one period blank," typically occurs in the context of cost center accounting or internal orders when you are trying to enter or process data related to periods in a financial transaction. This error indicates that the system requires at least one valid period to be specified, and you cannot leave multiple periods blank.
  Cause:
  
  Multiple Periods Blank: The most common cause of this error is that you are trying to enter data for a range of periods, but you have left more than one period field blank. For example, if you are entering a start and end period, and you leave both fields blank, the system will trigger this error.
  Incorrect Configuration: There may be configuration settings in the system that enforce this rule, which could be related to the fiscal year variant or period control settings.
  Data Entry Error: It could also be a simple data entry mistake where the user inadvertently skips entering the required periods.
  
  Solution:
  
  Check Period Fields: Ensure that you have filled in the required period fields correctly. If you are entering a range, make sure that at least one of the period fields (start or end) is populated.
  Review Input Data: Double-check the data you are trying to enter. If you are using a selection screen, ensure that you have provided valid inputs for all mandatory fields.
  Consult Documentation: If you are unsure about the required fields, refer to the SAP documentation or help files related to the specific transaction you are using.
  Configuration Review: If the issue persists, consult with your SAP administrator or functional consultant to review the configuration settings related to periods in your SAP system.
  
  Related Information:
  
  Transaction Codes: This error can occur in various transaction codes related to cost accounting, such as KSB1 (Cost Centers: Actual Line Items), KOB1 (Orders: Actual Line Items), etc.
  Fiscal Year Variant: Ensure that the fiscal year variant is correctly set up in your system, as this can affect how periods are defined and used.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance on handling period entries.
  
  If you continue to experience issues after following these steps, it may be beneficial to reach out to your SAP support team for further assistance.