Is there a limit to number of fields that can added in advanced search for Process Requisitions?

Summary:

As part of a new working method within the Purchasing department, the Purchasing Manager would like to set up saved searches in the 'Process requisitions' page, based on the search for requisitions awaiting processing for a list of pre-defined purchasing categories.

To do this, the manager needs to know if there is a limit to the number of times the field 'Category Name' can be added to the advanced search screen?

If so, what is the limit please?

Content (please ensure you mask any confidential information):

Here as an example, we have added the "Category Name" field an additional 2 times on the the advanced search page.