SAP provides industry specific Enterprise Resource Planning (ERP) solutions. SAP is the world’s leading provider of business software and is the 3rd largest software company in the world, competing with Oracle and Microsoft. Most people consider SAP to be a bit difficult to learn compared to other database systems such as SQL based databases, remember database tables in SAP are not normalized.
However I would recommend you have to get some work experience in SAP (which u have already) before attempting to get certified as it help with passing the exams. Going for certification in SAP is required only if you intend implementing SAP solutions as a career. Most of the company train their employees to use their systems soon after being recruited and therefore a good starting point would be to become and end user of SAP by working for a company that uses SAP. So, as your background, it is definitely helpful.
For further information, please link here.
Hope it may help you!