Get shiftPreferences Bug Report

Dear @Yang, Yinchen,

Thank you so much for contacting Microsoft Q&A Forum. 

Based on your description, itf the shiftPreferences API is consistently returning: 

"createdDateTime": null, 

"lastModifiedDateTime": null, 

"lastModifiedBy": null 

This typically indicates that the shift preference object may exists but hasn't been modified or explicitly created by a user or system yet. Also, I need more contexts of your situation so that I can assist you further:  

• Could you please provide your input regarding this scenario? 
• Additionally, may I ask which applications you are using it for? 
• If applicable, kindly share the part of your code which released these null outputs. 

Besides that, I have basic steps that you can double-check your work: 

1.May I know that have you ever set your shift preferences? If not, the null values may be expected. 

2.Check API permissions: 

• Schedule.Read.All 
• Schedule.ReadWrite.All 
• Also verify that delegated or application permissions are correctly configured. 

Reference: Get schedule - Microsoft Graph v1.0 | Microsoft Learn 

Also, I find several articles that you can consult more about this issue: 

• shiftPreferences resource type - Microsoft Graph v1.0 | Microsoft Learn

• Get-MgUserSettingShiftPreference (Microsoft.Graph.Users) | Microsoft Learn 
• user resource type - Microsoft Graph v1.0 | Microsoft Learn 

• MicrosoftGraphUser.CreatedDateTime Property (Microsoft.Azure.PowerShell.Cmdlets.Resources.MSGraph.Models.ApiV10) | Microsoft Learn 
• educationClass: getRecentlyModifiedSubmissions - Microsoft Graph beta | Microsoft Learn 

I hope this information can help you to clarify this issue so that you can resolve it soon. 

Wish you a pleasant day!

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