12:39 Jan 4 

all the suggestions are OK, but may not be compatible with the term used by SAP.

SAP usually has an abbreviation for specific items, e.g. the
component: MM - Materialwirtschaft
contains the term: >>>blocked stock
Glossar: Materials Management (MM)
Valuated stock of a material managed in batches that is held by (and
belongs to) a company but should not be used.
Blocked stock is considered "not available". This category of stock is
only possible in a plant with active batch status management.

DE Bestand, gesperrter
Glossar: Materialwirtschaft (MM)
Firmeneigener, bewerteter Bestand eines Materials, der nicht verwendet
werden soll und als nicht frei verwendbar gilt.
Bei der Verfügbarkeitsprüfung gilt der gesperrte Bestand als nicht
verfügbar.<<<<
(Quote from SAPterms MUltiterm DB)
I suggest using "goods" instead of "stock" as the sentence seems to indicate that individual products (item) being blocked or barred are identified, rather than the total collection (stock) of products.