VERIFIED SOLUTION i

How to have MailStream Plus(MSP) allow more than 1 mailer id in a single job for the Full Service IMB barcode

Does MailStream Plus(MSP)  allow more than 1 mailer id in a single job for the Full Service IMB barcode?

Yes. Every input record can contain its own Mailer id or the job can use a single Mailer id.  MSP will accept either way.
But since there is only a single barcode on a container tag (tray, sack or pallet) only 1 mailer id can be chosen for the container tags in a job.

Please refer to position 12 of the IMBOUT parameter for the Location of Mailer ID, and if you want to provide the Mailer ID in the input file or using the XX INF with IMBMLR.  
Please see the MSP Reference Guide for more information on the IMBOUT and other parameters.
UPDATED:  April 10, 2017