Gap less Sequence number/Invoice numbering

Hello All,

This is with respect to note "How To Setup Gapless Document Sequencing in Receivables [ID 197212.1]". I have below questions

1. Are there any enhancements in R12.1.3 for Gap less numbering for Consolidated Billing - this was not available in 11i as per the note

2. Whether the gap less sequence numbers be in series & sequential irrespective of Importing through Autoinvoice and  Manual invoice?

3. Any known issues/gaps with respect to gap less numbering? What happens when invoice get stuck in with error while importing through Autoinvoice?

Have you used this OOB feature? Is this working fine?

thanks

Anil Ajjammanavar