How To Fix /PF1/MSG_PO_E901 - Calendar for duplicate check not maintained

/PF1/MSG_PO_E901 - Overview

• Message type: E = Error

• Message class: /PF1/MSG_PO_E -

• Message number: 901

• Message text: Calendar for duplicate check not maintained

Self-Explanatory Message

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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/PF1/MSG_PO_E901 - Details

• The SAP error message /PF1/MSG_PO_E901 Calendar for duplicate check not maintained typically occurs in the context of purchase order processing. This error indicates that the system is unable to perform a duplicate check for purchase orders because the calendar settings required for this check have not been maintained.
  
  Cause:
  
  
  Missing Calendar Configuration: The error arises when the system cannot find a calendar configuration that is necessary for the duplicate check process. This could be due to:
  
  The calendar not being defined in the system.
  The calendar not being assigned to the relevant purchasing organization or company code.
  
  
  
  Incorrect Settings: There may be incorrect or incomplete settings in the configuration related to the duplicate check for purchase orders.
  
  
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Calendar Configuration:
  
  Go to the SAP Easy Access screen and navigate to the configuration for purchasing.
  Use transaction code SPRO to access the SAP Reference IMG.
  Navigate to Materials Management > Purchasing >