iOS Proper identifier use

[chainprayer]

I'm working on getting my first app published and have hit a roadblock. I'm looking at the walkthrough in the dev portal and am confused with the app identifier. The following example matches the format of my app id:

Example App ID: A1B2C3D4E5.*
Identifier to enter in Xcode: <full_reverse_dns_company_and_application_or_suite_name>

I have no clue what the text in brackets would mean. What should I format that as?

As of now I have com.myActualCompanyName.theNameOfMyApp. Is this formatting correct? If not is this why I am getting the error "The binary you uploaded was invalid. The signature was invalid, or it was not signed with an Apple submission certificate."

Thank you SO much! I'm so frustrated to have coded so much and be stopped here!