What is it?
The Add Static Value filter is designed for you to be able to output a fixed value or string of text where you may need an output for data that isn't present within your document. This can be especially useful for defining a company name, a tax ID, or some other form of fixed data you need to reach your endpoint.
How is it used?
Add Text Filter > More Filters ... > Set Static Value
Additionally, the Add Static Value preset under general can provide the same use.
The Set Static Value filter contains only one field. This can be used to define any number, character or string to output with every parsed document. If you require multiple static values, additional parsing rules with this filter can be added.