This, to me, appears to be two questions in one. In response to your first question, Conventional Application Package and ERP differ in a number of ways. An ERP (which stands for Enterprise Resource Planning) program allows a business owner or manager to focus upon, make attainable, and achieve business objectives. An ERP system is used throughout the entire company to ensure that resources and information are equally distributed throughout the company in order to allow each member of the company to achieve the goals they have been set. Although ERP programs were constructed for use in the largest companies, today they are used in companies and businesses of all sizes. ERP programs allow users to monitor and complete a number of broad ranging tasks. On the other hand, a conventional application package is used in order to allow the users within the company to complete a single task, or multiple tasks which are somehow related to one another, therefore a conventional application package appears to be less versatile and flexible than an ERP program to fulfill the needs of a company and those within it.
In response to the second part of your question, to ensure the success of the implementation of an ERP program, most companies who offer ERP software also offer a lot of support, in the form of consultation and customization. This means that you will be able to consult with the provider of your ERP program in order to get their advice about implementing your ERP software, and they will usually help you in many stages of the implementation. This also means that, to an extent, your ERP software may be customized in order to suit the needs of its users and your company as a whole. The process of customizing your new ERP software may also be referred to as configuration.
In response to the second part of your question, to ensure the success of the implementation of an ERP program, most companies who offer ERP software also offer a lot of support, in the form of consultation and customization. This means that you will be able to consult with the provider of your ERP program in order to get their advice about implementing your ERP software, and they will usually help you in many stages of the implementation. This also means that, to an extent, your ERP software may be customized in order to suit the needs of its users and your company as a whole. The process of customizing your new ERP software may also be referred to as configuration.