out of print at present (OPP)

What is out of print at present (OPP)?

out of print at present (OPP) meaning in Information Science terminology / glossary / dictionary is:

A term used on a publisher‘s invoice to indicate that a publication cannot be supplied because current inventory is exhausted but additional copies may be printed at some unspecified time in the future. Compare with out of print and temporarily out of print.

 

reference: ABC-CLIO