Pros:

1. Automation and Efficiency: APIs allow for seamless integration with existing ERP, accounting, and business management systems. This can automate the invoicing process and reduce manual data entry.

2. Customizability: APIs offer more flexibility to tailor e-invoicing solutions to your specific business needs, enabling customization of workflows and reporting.

3. Real-Time Processing: With API integration, invoices can be processed and transmitted in real-time, improving the efficiency and speed of your invoicing operations.

Cons:

1. Complexity: Setting up API integration can be more complex and may require technical expertise or additional resources for development and maintenance.

2. Cost: There may be higher initial costs associated with developing and maintaining API integrations compared to using a standard portal.

• Business Size and Needs: Small to medium-sized businesses with simpler invoicing needs might find the IRBM portal sufficient and easier to manage. Larger businesses or those with more complex invoicing requirements might benefit from the automation and flexibility offered by an API.

• Integration Requirements: If you need to integrate e-invoicing with other business systems (e.g., ERP or accounting software), an API is generally the better option due to its capability to automate processes and synchronize data.

• Technical Capability: Assess your technical resources and expertise. If you have the capability to develop and maintain API integrations, it can provide significant advantages in terms of efficiency and customization.