Art. 1156 Amended and supplemental pleadings in incidental action

Here's a plain English summary of this rule:

If you're involved in a side case that comes up during a bigger lawsuit (called an "incidental action"), you can still change or update your paperwork after you've filed it. This includes the initial claim, the response to it, and any objections raised in that side case.

The rule works the same way as it does for regular lawsuits. So if you need to fix a mistake, add new information, or update your legal argument, you can do that using the same steps and rules that apply to amending documents in a normal case.

In short, this rule just makes sure people involved in these smaller, related legal matters have the same flexibility to correct or add to their paperwork as people in the main lawsuit do.