> For the complete documentation index, see [llms.txt](https://docs.editran.onesait.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.editran.onesait.com/documentacion-editran/ibm-editran-v5.3-iseries-en/reinstallation/introduction.md).

# Introduction

The reinstallation process for version 5.3.1 can be broken down into two lines of action; the first consists of installing the product, porting the configuration files, modifying the procedures (pre-, post-, and exception) and a second that refers to the changes that must be made in the applications that use the product as a result of calls to the interfaces with Editran and the use of the product's own resources.

The actions are described below.


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