How To Fix /SAPAPO/CAL051 - Calendar &1: data inconsistent

/SAPAPO/CAL051 - Overview

• Message type: E = Error

• Message class: /SAPAPO/CAL -

• Message number: 051

• Message text: Calendar &1: data inconsistent

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/CAL051 - Calendar &1: data inconsistent ?

  The SAP error message /SAPAPO/CAL051 Calendar &1: data inconsistent typically indicates that there is an inconsistency in the calendar data for the specified calendar ID (&1). This error is often encountered in the context of SAP Advanced Planning and Optimization (APO) when dealing with planning calendars, which are crucial for scheduling and planning activities.
  Causes:
  
  Missing or Incorrect Calendar Entries: The calendar may have missing entries or incorrect configurations, such as holidays or working days that are not properly defined.
  Data Corruption: There may be corruption in the calendar data due to system errors or issues during data migration.
  Inconsistent Time Periods: The calendar may have overlapping or conflicting time periods that lead to inconsistencies.
  Custom Modifications: If there have been custom modifications or enhancements to the calendar functionality, these could lead to inconsistencies.
  
  Solutions:
  
  
  Check Calendar Configuration:
  
  Go to the transaction code /SAPAPO/CAL to access the calendar maintenance screen.
  Verify that all entries (working days, holidays, etc.) are