Which parts of 1C accounting have you worked with the most?

In my practice with 1C, I most often worked with accounting areas:

• Inventory and warehouse accounting — verifying the correctness of receipt, expense, and transfer operations, as well as stock balances.
• Cash and bank account management — controlling cash register and bank transactions.
• Counterparty settlements — checking the correctness of invoice issuance and payments, debts.
• Production accounting — ensuring proper material write-offs and finished product releases.

These areas most frequently require automation testing due to the large number of business rules and interrelations between documents and directories.