Hi Shri,
AX picks delivery address of Sales order on below terms -
1) If we have a single customer address against customer account, AX will pick it as delivery address of SO
2) In case of multiple addresses, AX will pick up address with ‘address purpose’ as ‘Delivery’
3) In case of multiple addresses with ‘Address purpose’ as ‘Delivery’, AX will pick the first created one.
Thanks.
Sangram