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Ajay Patel 12Ajay Patel 12 

how to get Field Service Lightning add-on license

how to get Field Service Lightning add-on license
Raj VakatiRaj Vakati
You can enabled it in developer edition for free 

From Setup, enter Field Service Settings in the Quick Find box, then select Field Service Settings.
Click Enable Field Service Lightning.
Save 

Refer this link

https://help.salesforce.com/articleView?id=fs_set_up.htm&type=5