Salesforce Created Date과 Last Modified Date 최초 등록 시 이전 시스템 일자로 등록하기~ Update 할 때는 안됨..

Just create a case through salesforce help for getting the permission to edit these fields. Once salesforce support team grants the access for editing these fields then perform following steps : 

1. Open the org.

 

2. Click on setup.

 

3. Type user interface in searching box as shown below and click on User interface :

 

 

4. Check “Enable “Set Audit Fields upon Record Creation” and “Update Records with Inactive Owners” User Permissions” checkboxes and click on save as shown in image below :

 

 

5. Again type permission sets in search box or profiles.

 

Check boxes of “Set Audit Fields upon Record Creation” and “Update Records with Inactive Owners” :

 

 

Now you will be able to change values of Created Date and Last Modified Date fields.