How To Fix C7045 - Relationship: No calendar specified

SAP Error Message - Details

• Message type: E = Error

• Message class: C7 - Scheduling

• Message number: 045

• Message text: Relationship: No calendar specified

What causes this issue?

Neither the work center nor the relationship have a calendar.

How to fix this error?

INCLUDE 'NA_ALLG_MOEGLICH'
Maintain a calendar in the work center.
Maintain a calendar in the operation.
If you do not maintain a calendar, scheduling is carried out using the
Gregorian calendar.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message C7045 - Relationship: No calendar specified ?

  The SAP error message C7045, which states "Relationship: No calendar specified," typically occurs in the context of project management or scheduling within SAP, particularly when dealing with network activities or project definitions. This error indicates that a required calendar has not been assigned to a specific relationship or activity.
  Cause:
  
  Missing Calendar Assignment: The most common cause of this error is that a calendar has not been assigned to the activity or relationship in question. In SAP, calendars are essential for determining working days, holidays, and other scheduling parameters.
  Incorrect Configuration: There may be an issue with the configuration of the project or network, where the calendar settings are not properly defined.
  Data Inconsistency: If there are inconsistencies in the data, such as missing or incorrect entries in the project definition or network activities, this error can occur.
  
  Solution:
  
  
  Assign a Calendar:
  
  Navigate to the relevant project or network activity in SAP.
  Check the settings for the activity or relationship and ensure that a valid calendar is assigned.
  If no calendar is assigned, select an appropriate calendar from the available options and assign it.
  
  
  
  Check Project Settings:
  
  Review the overall project settings to ensure that a default calendar is defined for the project.
  If necessary, create or modify a calendar to meet the project's scheduling needs.
  
  
  
  Validate Data:
  
  Ensure that all required fields and settings are correctly filled out in the project or network definition.
  Look for any inconsistencies or missing data that could lead to this error.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific instructions on how to assign calendars and manage project settings.
  
  
  
  Contact Support:
  
  If the issue persists after checking the above points, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  
  
  Related Information:
  
  Calendars in SAP: SAP uses various types of calendars, including factory calendars, holiday calendars, and project-specific calendars. Understanding how these calendars work is crucial for effective project management.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CJ20N (Project Builder) or CN21 (Create Network) to navigate and manage project activities effectively.
  SAP Notes: Check for any SAP Notes related to this error message, as they may provide additional insights or patches that could resolve the issue.
  
  By following these steps, you should be able to resolve the C7045 error and ensure that your project scheduling functions correctly within SAP.