Final answer:
Persons are prohibited from altering customer diskettes except for corrective action on high precedence messages, which must be coordinated with the customer.
Step-by-step explanation:
The individual(s) prohibited from altering customer diskettes in any manner are typically those who are not authorized to interact with customer data or modify software or hardware, except under specific conditions such as the need for corrective action for the transmission of high precedence messages. This protocol ensures data integrity and compliance with any associated regulations or policies. When corrective action is necessary, it must be coordinated with the customer to maintain transparency and consent regarding any modifications to their data storage. Typically, such protocols are in place within IT departments, data centers, or among professionals handling sensitive information in various organizations to ensure the security and integrity of customer data.