De-Link Sales order under Configuration Tab under IE02

I have equipment s which we need to update under transaction MIGO while doing Goods Receipt where I need to de-link the sales order which is maintained as reference to the Equipment. Am able to de-link using IE02 but we need to do through custom code. Is there a standard-transaction , FM/BAPI that may do that for me?

Have attached screenshot for same.

ie02.png

Thanks