My product catalog has a lot of facets. Is there an alternative way I can send them to you?

Yes. If the standard approach of sending one facet per column does not meet your needs, you can also include an arbitrary number of facets in a single column called facets in your data feed.

Use the following format for the values in the column:

key1: value1 | key2: value2

The keys and values should be separate a colon (:) and the different key/value pairs should be separated with a pipe symbol (|).

If a colon (:) or pipe (|) is a part of a key or value, then it should be escaped with a backslash (\) like so:

key\:1: val\|ue1 | key2: value2

This will be parsed into ('key:1', 'val|ue1') and ('key2', 'value2').