The following stock symbols don’t get Yearly Income Statements:

• KR
• XOM
• BRK-A
• BRTHF
• UNH
• MCK
• DAI.DU
• VZ
• COST

Using the https://yahoofinance-stocks1.p.rapidapi.com/financialstatements/annual-income endpoint.

These are all major corporations and I can see their numbers on the yahoo financials website

MSFT, AMZN, AAPL, FB work