Hi ​@Hashmit 

Can you share more information  and what is on the application side you are doing (RmB,Save etc..) 

Regards,

Chanuka

​@Chanu_Yazi  I ran event generation for all the sites.

It seems the Event id in basic data in “Work Order and PM Basic Data\Events” that you are trying to do the event generation no longer exist(removed). This is not possible from the client side once the Event Id is used in a PM Action. But some one with administrator privileges can remove that in the server.

/Priyanka