MCA XBRL Validation Tool Version 4.8 is a critical utility provided by the Ministry of Corporate Affairs (MCA) to ensure that financial reports filed in XBRL format strictly adhere to required business rules and taxonomies. Validating an "Instance Document" (your financial XML file) with this tool is a mandatory prerequisite before it can be uploaded to the MCA portal. Key Features of Version 4.8 Multi-Taxonomy Support