Refund of RCM

Dear All,

How can we get refund of RCM paid? We have paid RCM on import services and next month we have taken its input claim and the amount is reflected in our credit ledger. We are issuing export service invoice as zero rated against LUT.

How can we get refund of RCM paid? What is its process.

Please give the exact applicable form number, what documents are required for this.