When implementing advanced currency management in Salesforce for AW Computing, which deals with customers in multiple countries, there are specific considerations that need to be taken into account. Here are two key points:

1. **A. When a currency is added to an organization's list of supported currencies, it cannot be deleted.**
- This is an important consideration because once a currency is added to Salesforce, it remains in the system even if it is no longer used. This could lead to clutter or confusion if many currencies are added without careful planning. Administrators need to be thoughtful about which currencies they add, as removing them later is not straightforward.

2. **D. Once enabled, advanced currency management cannot be disabled.**
- Enabling advanced currency management (also known as Dated Exchange Rates) in Salesforce is a significant decision because once it's turned on, it cannot be disabled. This feature allows for managing exchange rates historically over different time periods, which is crucial for organizations dealing with transactions in multiple currencies over time. However, the irreversible nature of this decision means it requires careful consideration and planning before implementation.

The incorrect options are:

- **B. Historical trend reports will only use the last dated exchange rate.**
- This statement is incorrect because one of the main features of advanced currency management is the ability to use historical exchange rates. Salesforce allows you to specify different exchange rates for different dates, and reports can use these historical rates, not just the last dated exchange rate.

- **C. Opportunities will only display sales in the customer's localized currency.**
- This is incorrect because Salesforce allows for the display of opportunity amounts in both the organization’s default currency and the opportunity’s currency. Advanced currency management enhances this by allowing historical currency rate managem...