We purchase Microsoft volume licenses through an MPSA agreement. When purchasing SQL Server with Software Assurance (SA) we saw that there are no training vouchers included. That is usually a SA benefit, isn’t it?
The MPSA agreement differentiates three software pools (application, system, and server). Benefits contained with SA purchases differentiate per software pool. Since the SQL Server belongs to the server pool, training vouchers are not contained with SA purchases for that product.
Source: Licensing handout_Microsoft_Software Assurance Benefits_as is 2017-08-31