Product conditions can come from several locations and be used in a variety of ways in meta tags and Schema markup, especially if you include variants and different ways to express offers.
You could hook the ‘wpsso_get_md_defaults’ or ‘wpsso_get_md_options’ filters and set the ‘product_condition’ array key:
‘wpsso_get_md_defaults’ ( array $md_defs, array $mod )
‘wpsso_get_md_options’ ( array $md_opts, array $mod )
See here for information on the $mod variable: https://wpsso.com/docs/plugins/wpsso/notes/developer/the-mod-variable/
A better approach, instead of using filters, might be to use a “Condition” attribute if you’re using WooCommerce, or use a custom field and set the Product Condition Custom Field option value under the SSO > Advanced > Attributes and Metadata > Custom Fields tab, although that would require the Premium version.
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