Hello @Pravin007 ,
Welcome to the MS Q&A platform.
A similar thread has been discussed here.
Per the thread, you can use Office 365 connector to pull data from the Graph API using copy activity.
(or) if you have an existing PowerShell script to pull the LDAP data, then you run the PowerShell script using the Custom activity to pull the LDAP data.
Here is the documentation about how to use Custom activity.
I hope this helps. Please let me know if you have any further questions.