What is a characteristic of short codes?

Short codes are designed to remain consistent once assigned, which contributes significantly to their utility in the trading environment. They are fixed identifiers that facilitate quick recognition and processing of trades, orders, or messages on trading platforms. The fact that short codes cannot be changed subsequently ensures stability and reliability in communication and operational processes. This permanency allows traders and systems to depend on these codes for consistent identification without the risk of them being altered unexpectedly, which could lead to confusion or errors in trading activities.

In contrast, short codes that could be changed unpredictably would potentially disrupt trading operations, leading to a lack of confidence in their reliability. The other characteristics, such as the ability to change them during the day, being assigned to multiple participants, or having no numeric identifiers, do not apply to the clarity and reliability that short codes provide in trading contexts.