Message: WARNING: AMOUNT_ALREADY_PAID has the value "X.XX". Amount paid must match this order's calculated amount of "X.XX" OR the amount of just the first installments of "X.XX".
Explanation: OrderLogix is calculating that the amount to be included in the pre-auth is different than the amount indicated in the imported Amount Already Paid.
Suggested Resolution: Confirm the offers on the order all have Realtime Auth = True
Special Considerations: This value can differ for other reasons as well, such as the Tax Rounding Method used, whether tax is charged on shipping or not, or whether tax is distributed across installments.