firebird2.5 - What is the use of firebird.msg in firebird database -

I'm thinking of using Firebird with my application. I would like to know that the firebird.msg is used for the file. Is it an optional or compulsory file to include in your app installer package?

firebird.msg contains firebird's actual error messages when an error occurs , Firebird only sends the error code and message parameters. The client library then sees the actual error message text in this file.

Without the presence of this file (for firebird 2.5 and earlier its in a folder for fbclient.dll (or similar libraries), Firebird 3 and later the same folder In) errormessage will only report that it can not get the firebird.msg and error number.

So you do not really need it, but if you need firebird clients or embedded libraries or want and if you want or want a meaningful error message from the firebird, then you should include it.