I would like to get some help from developers about new apps and core module customization’s. Let’s say I am developing a complete new module for “Libraries” and I want keep this as a separate module so I can sell this to multiple customers. My module name is “Library Management”.
All, of the business functionality is implemented within the new module and new DocTypes are created too. However, I need some customization’s done to some of the core DocTypes such as Sales Invoice etc. Whenever, I want to install new module for my customers, I want to update the customization’s done to the core DocTypes as well.
Let’s say, In library module I have the ISBN recorded. Also, “Sales Invoice” need to have the ISBN as a reference too. How do I make sure these core module customization’s are migrated whenever, I install the new module?