Logistics invoice verification is the final step in the procure-to-pay cycle where the vendor submits an invoice. The AP group enters the invoice in SAP. Based on purchase order details, goods receipt, and configuration settings, the system may prompt to park/save the invoice for later changes or post it. Under certain circumstances like variances, the invoice can get blocked from payment until the block is removed. Tolerances are defined in customizing to configure acceptable variances, and blocked invoices can be released individually or collectively using transaction code MRBR.