A user is facing issues with invoices not appearing in their GSTR 2A for March, impacting their ability to claim Input Tax Credit (ITC) and potentially leading to payment difficulties. They are asking if they can file their quarterly returns for March by entering ITC greater than their GSTR 2B, or if waiting until April's GSTR 2A reflection is an option. The user is also concerned about potential penalties or notices for claiming excess ITC before the invoices are officially reflected.