Do I have to claim income in Box 028 on a T4A slip?

The company (HMV) that I was working for went bankrupt and I received a T4A slip that has Box 028 filled. I'm unable to file my tax return as I'm getting error messages that tell me I have to list a business number and address. I'm not sure what the income is for from HMV so how can I correct this so that I can file my taxes?