Hi Puru,
Accruals methods are available for specific revenue types, you can refer the help document 'Revenue Recogntion'
To can view the basic accrual methods like
Continue to Defer & Reverse deferrals and accruals method with their description on when to use these.
Go to Accrual methods for specific Revenue Types view in the same document.
Then apart from the
1. Revenue Recognition for Product Sales and Customer Returns
2. Revenue Recognition for Project Sales
3. Revenue Recognition for Customer Contracts
4. Revenue Recognition for Multi-Customer Projects
Refer these help documents to know when each accrual methods is used and can you select a accrual methods based on the nature of revenue type you are suing.
Thanks
Lokesh Sharma