Internal Invoice format to group at a receiver project level.

Summary:

Our existing setup groups inter-company invoices at Invoice line, project and expenditure type level as shown in the screenshot.

With the following attributes:

Request is to group invoices at a project level, so we tried to assign 'Contract Line, Contract Line Project/Task, All'.

However, when this is selected, I am not able to assign any combination of Invoice format details. Receiving the following error message.

Could some one please let me know, what combinations are allowed for this grouping method.
PS: Is Work type attribute allowed for this grouping method.