Need do I delete a cost plan

Johnson7s
Tera Contributor

Dear Team,

 

We have to delete some cost plan named with "To be deleted", but when we try to delete we are not able to delete the cost plan, we are getting errors as 'Error Message

Cost plan can not be deleted. There are Resource Plan linked with this cost plan." but could see Resource plan is "empty". As we have got the data from production to non prod for testing or validation can any one please suggest the process to take it ahead.
 
Thanks
Johnson