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Shri RajShri Raj 

REST API Call from Salesforce to In-House system.

I'm trying to access an external System which is inside my office network. Using the POST method I will try to access the data from that system. For Eg : If i pass the zipcode, I can get the city Name. 

What all are the things i need to consider before making this call to that system apart from the EndPoint. 

Thanks
Best Answer chosen by Shri Raj
James LoghryJames Loghry
You'll need to add a remote site setting for your external system.  See here: https://help.salesforce.com/apex/HTViewHelpDoc?id=configuring_remoteproxy.htm&language=en

Other than that, just keep in mind that there is a limit of 10 callouts per transaction, and how you need to handle error conditions, etc.

All Answers

James LoghryJames Loghry
You'll need to add a remote site setting for your external system.  See here: https://help.salesforce.com/apex/HTViewHelpDoc?id=configuring_remoteproxy.htm&language=en

Other than that, just keep in mind that there is a limit of 10 callouts per transaction, and how you need to handle error conditions, etc.
This was selected as the best answer
Shri RajShri Raj
Thanks James