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

KG304 - Overview

• 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