With https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=9021 the new field "sms_provider_id" was created in Koha table "borrowers". It is actually there in Koha 16.05. But the field is not listed in http://schema.koha-community.org/tables/borrowers.html
Liz, do you know who is supposed to update the schema?
The database schema has been updated by Chris Cormack as of today after a request on the koha-devel list. See: http://schema.koha-community.org/16_05/ http://schema.koha-community.org/master/ (cc-ing Chris Cormack)
Even after the update of the database schema the field "sms_provider_id" is not there, neither in http://schema.koha-community.org/16_05/ nor in http://schema.koha-community.org/master/
I can see it in both, master and 16_05 in the borrowers table now.
I'm sorry - yes, I can also see it in master and 16_05 in the borrowers table now.
Problem solved :)