How To Fix CY019 - Error when determining the first day in a calendar week

CY019 - Overview

• Message type: E = Error

• Message class: CY - Capacity Requirements Planning

• Message number: 019

• Message text: Error when determining the first day in a calendar week

What causes this issue?

When the system tried to find the first day of a calendar week, an
error occurred. The week specification is not correct.

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 your entry and enter a correct format for the week.

Error message extract from SAP system. Copyright SAP SE.

CY019 - Details

• The SAP error message CY019 typically occurs when there is an issue with determining the first day of the calendar week in the context of time management or planning. This error can arise due to various reasons, including configuration issues, missing data, or incorrect settings in the calendar or date formats.
  Causes of CY019 Error
  
  
  Calendar Configuration: The calendar settings in the system may not be properly configured. This includes the definition of the week start day (e.g., Sunday or Monday) and the calendar year.
  
  
  Missing or Incorrect Data: There may be missing entries in the calendar tables or incorrect data that prevents the system from determining the first day of the week.
  
  
  User Parameters: User-specific settings or parameters may not be set correctly, leading to discrepancies in how the system interprets the week start.
  
  
  Time Zone Issues: If the system is set up to handle multiple time zones, discrepancies in time zone settings can