SAP on demand consulting for external services consultancy SAP, FI module preferably, freelance condition, analysis of problems / error, armed with technical specification, and creation of test cases for the programmer, word creation explanatory with the step by step of new implementations or z transactions for the client / user. knowledge in others Modules SD, MM, FI-AR, FI-CO, invoice implementation electronic, AFIP, debug, creation of invoice model and Product tags for the customer / user from SAP