How many letters does the top answer for “making an itemized list of merchandise or supplies on hand” have?

The most common answer is inventorying (12 letters).

Crossword clue: making an itemized list of merchandise or supplies on hand

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

inventorying 12 letters wn-def

making an itemized list of merchandise or supplies on hand

stocktaking 11 letters wn-def

making an itemized list of merchandise or supplies on hand