The IT Commercial Order to Cash Sales Marketing Business Analyst will be responsible for monitoring and following up on Customer Service Requests (CSRs) in collaboration with Business Relationship Managers (BRMs). They will develop functional specifications, gather user approvals, conduct UATs, and create requirements for production releases. The analyst will manage and maintain electronic invoicing systems and their interfaces, address and resolve related issues, and collaborate with various departments to ensure efficient invoicing processes. They will also analyze processes to identify areas for improvement, ensure compliance with tax regulations, review monthly budgets, manage purchase orders and invoice processing, and handle administrative expenses.