Capitalize multiple assets under construction at once

Hello,

We have a SAP landscape in which PS and internal orders are not in scope. The process we would like to implement looks like this:

• Invoice is received and posted as asset under construction
  • The date the asset under construction should be capitalized as a fixed asset is already known at this point in time
• All the assets under construction to be capitalized as fixed asset within one month (posting period) should be capitalized at once
  • An one to one relation can be made between AuC and fixed asset; so one AuC will become one fixed asset

What would be the most efficient way to do this? We could use AIAB and AIBU, but then whe have to define many many distribution rules manually. We could use ABUMN to transfer the AuC to a fixed asset, but this can only be done for one fixed asset at the time if we want fixed asset master record to be created automatically.

Is there a way transactions AIAB and AIBU can be automated (without the need for enhancements / ABAP) or another way to automate this process without the need to implement PS or internal orders?

Kind regards,

Andre