As we know that the Invoice Verification is a sub-component of MM and it has its integration with other sub-component of MM Module such as Purchasing and Inventory Management. Since SAP R/3 is an integrated system and information/Data flows from one application to other. Due to availability of integration utility within MM-FI, Postings are made to G/L accounts automatically in the case of Invoice Verification and Inventory Management transactions relevant to Financial and Cost Accounting. The following accounts are particularly important for Invoice Verification: