Why is SAP ERP so complicated?
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Anyone who has been in close contact with SAP ERP will feel its complexity, and no one can fully grasp it.
At first glance, what about SAP PI? It looks simple because it is just an interface middleware and there is no business logic program in it, but the complexity is extremely high because almost all of its interfaces can be configured.
In my opinion, there are several main reasons for its complexity:
1. As an excellent companion of SAP ERP, users must be very familiar with ABAP, note that it is very difficult to use it well if you don't know the configuration of various connection types of SM59, such as tRFC,qRFC, IDOC can't, and BAPI can't be used freely.
two。 Interface development, especially complex interfaces, involves a lot of actual business processes and field printing, whether data is pushed or pulled, synchronous asynchronous, frequency, data volume, error handling and so on, all need to be designed according to the actual business.
3. After deepening the study of PI, it is inevitable to face a lot of basis problems, do not rely on BASIS to solve PI problems, no one is more familiar with PI,SLD, permissions configuration, backup, transfer, TRACE, installation, playing PATCH, all of which you may encounter.
4. Basic software knowledge, such as PI Java, database, WEB SERVICE development, SMTP protocol, SOAP protocol, FTP protocol, etc., you should be familiar with, PI is a middleware based on SOA architecture, the idea of XML runs through before and after, from this point of view, basic knowledge is more important, when encountered a lot of puzzling problems, starting from the foundation is the key.
5. Good English reading and writing skills, patience and communication skills. The information of PI is not in Chinese. In the actual interface design, you also need to constantly communicate with developers and business personnel of various systems (non-SAP) or SAP to make them understand the SOA-based interface architecture. When there is a problem, you need to be able to accurately locate which side of the problem.
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