Ordering decisions under supply uncertainty and inventory record inaccuracy: an experimental investigation

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Hofstra, N, Spiliotopoulou, E and De Leeuw, S ORCID: https://orcid.org/0000-0003-3056-8775, 2022. Ordering decisions under supply uncertainty and inventory record inaccuracy: an experimental investigation. Decision Sciences. ISSN 0011-7315

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Official URL: https://doi.org/10.1111/deci.12564

Abstract

Uncertainty on the supply side is a common issue planners face. How do decision makers incorporate inventory uncertainty when placing orders? We investigate ordering decisions under two forms of uncertainty regarding total inventory available to satisfy demand: supply uncertainty (SU: unreliability in incoming shipments), and inventory record inaccuracy (IRI: internal inefficiencies leading to a discrepancy between physical and recorded inventories). Experimental results reveal behavioral regularities in ordering decisions under both forms of total inventory uncertainty. We find that subjects overstock in settings with low profit margins, and overstocking is more pronounced under IRI than under SU. This overstocking under low profit margins is similar to observed ordering decisions under demand uncertainty. In these settings, subjects show a stronger shortage aversion under IRI (which is internal uncertainty) than under SU (which is external uncertainty). Furthermore, we find that subjects chase past realizations of supply/onhand inventory although the effect depends on the uncertainty type. Although SU and IRI are, in practice, often simultaneously present, their causes are different. By providing insight in the relative effect of the types of uncertainty on the quality of inventory replenishment decisions, this study highlights the importance of reducing SU and IRI for products with low profit margins.

Item Type:	Journal article
Publication Title:	Decision Sciences
Creators:	Hofstra, N., Spiliotopoulou, E. and De Leeuw, S.
Publisher:	Wiley
Date:	3 May 2022
ISSN:	0011-7315
Identifiers:	Number Type 10.1111/deci.12564 DOI 1547925 Other
Divisions:	Schools > Nottingham Business School
Record created by:	Linda Sullivan
Date Added:	23 May 2022 15:40
Last Modified:	23 May 2022 15:40
URI:	https://irep.ntu.ac.uk/id/eprint/46353