Shelf life limiting
attributes (SLLA) are attributes which will first breach their
specified limit when stored at label conditions. They are a subset of
stability-related quality attributes.
Stability-related quality attributes (SRQA)
typically are subset of quality attributes that either (1) directly or
indirectly impact stability but may or may not impact other considerations
(such as manufacture of the drug product) or (2) are attributes whose values
may change on stability.