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Mona ThakerMona Thaker 

I am having this error while insatlling dram house app. Though i installed it and import data successfully. what to do? can anyone please help

"This package can’t be installed. There are problems that prevent this package from being installed. Duplicate Name The name "Property__c" is already used on component type: Custom Object Definition. Please rename existing component."
AnkaiahAnkaiah (Salesforce Developers) 
Hi Mona,

As per your issue,  there is aleady existing object with the name of Property__c in your org. 

Rename the existing object(Property__c ) API name and try to install the app again.

If this helps, please mark it as best answer.

mukesh guptamukesh gupta
Hi Mona,

It means you already have a Custom Object with Name "Property" (API Name: Property__c).

You have two option for solution:-

Solution 1:-
Goto > SetUp > Object Manager > Property Object and rename your object and try installing

Solution 2:-  Create a new Trailhead Playground for you task

if you need any assistanse, Please let me know!!

Kindly mark my solution as the best answer if it helps you.