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Software Maintenance:-
At present, software maintenance is broadly approved section of the system development life cycle. Software maintenance activity will be start when any software is delivered to the client. It contains mainly deviations an
In OpenERP first, create existing module and then inherits the account.invoice object in your own module and also create report file in your own module.
Follow these step given belowas
Step1- First create module like, test then create file in your
