Obsolescent stock is stock, usually finished goods, which is in good condition and satisfactory working but for which demand is irreversibly falling towards zero. Once this demand reaches zero the stock can be considered 'obsolete'. It cannot be used or sold in its current state. Food ingredients (like candy canes) which are out of date are another example.
Reference: CIPS study guide page 86-88
LO 2, AC 2.1

An exponential moving average (EMA) is a type of moving average (MA) that places a greater weight and significance on the most recent data points. The exponential moving average is also referred to as the exponentially weighted moving average. An exponentially weighted moving average reacts more significantly to recent price changes than a simple moving average (SMA), which applies an equal weight to all observations in the period.
Reference: CIPS study guide page 111-112
LO 2, AC 2.3

Barcode technology has several limitations:
* Requires line-of-sight scanning (LOS): Barcodes must be directly visible to scanners, reducing flexibility in scanning items in bulk.
* No read/write capabilities: Barcodes can only store static data, limiting functionality in dynamic inventory environments.
* Labour-intensive: Each barcode must be scanned individually, making it time-consuming in high- volume environments.
Despite these limitations, barcodes are widely used due to their low cost. Whole-life asset management often considers RFID as a more efficient alternative to barcodes, especially in high-value asset tracking.

Scheduled maintenance is any repair and upkeep work performed within a set timeframe. It details when given maintenance tasks are performed and by whom. Scheduled maintenance may occur at repeating intervals or in response to a work request.
"Overhauling of machine" means that the machine is regularly checked and corrupted parts are replaced if needed.
"Cleaning of tank" and "Oil changes" also occur at time intervals as scheduled So the correct answer is "Repair signage damage from a recent storm" Reference: CIPS study guide page 158-163 LO 3, AC 3.1

The product code is often the key to obtaining documentation relating to products.

Product codes are often use to link to internal processes. Some computerised inventory systems trigger alerts when specific items or volume are ordered - this could be an out-of-stock warning or potential volume errors.
In many cases, an organisation will use its own product code system. The organisation constructs a code that is effective and fits with its software and the variety of items covered. So these codes may or may not comply with any international standards (such as GS1 specifications, ISO standards, etc.). As organisations make up the code themselves, the codes may look identical to others. For example, SKU414675 reveals that it is used for many items, including the following:
- A UK wholesaler's six-pack of branded cola
- An Australian snack food
- UK flower seeds
- An Italian desk sold in Japan
- A Brazilian light fitting
Reference: CIPS study guide page 33-42
LO 1, AC 1.2