It means part of your coins have been withdrawed successfully. However, no worries, the remaining coins will be sent back to your member account balance. You still can get them to the game account again by clicking "Get Coins" like usual.

P.S. If your remaining coins are less than 50k, you can withdraw them with your next purchase. They have no expiration date. When you order again, you can combine 2 orders into one and withdraw all coins at once.