5. The method as recited in claim 1 , further comprising at least one of: detecting one or more OCR errors based at least in part on textual information from a complementary document; detecting one or more OCR errors in the financial document using one or more predefined business rules; detecting one or more OCR errors based at least in part on textual information from the complementary document and one or more of the predefined business rules; correcting at least one detected OCR error in the financial document using one or more of the predefined business rules; correcting at least one detected OCR error in the financial document using textual information from the complementary document; correcting at least one detected OCR error in the financial document using textual information from the complementary document and one or more of the predefined business rules; normalizing data from a complementary document using at least one of the predefined business rules; normalizing data from the financial document using at least one of the predefined business rules; and normalizing data from the financial document using textual information from the complementary document and at least one of the predefined business rules.
5. The method as recited in claim 1 , further comprising at least one of: detecting one or more OCR errors based at least in part on textual information from a complementary document; detecting one or more OCR errors in the financial document using one or more predefined business rules; detecting one or more OCR errors based at least in part on textual information from the complementary document and one or more of the predefined business rules; correcting at least one detected OCR error in the financial document using one or more of the predefined business rules; correcting at least one detected OCR error in the financial document using textual information from the complementary document; correcting at least one detected OCR error in the financial document using textual information from the complementary document and one or more of the predefined business rules; normalizing data from a complementary document using at least one of the predefined business rules; normalizing data from the financial document using at least one of the predefined business rules; and normalizing data from the financial document using textual information from the complementary document and at least one of the predefined business rules. 7. The method as recited in claim 5 , further comprising prompting a user for input relating to the financial document, wherein the prompting occurs at least partially in response to detecting the OCR errors, wherein the user input relates to the extracted identifier, and wherein the at least one of the detecting, the correcting, and the normalizing is based at least in part on the user input.