COUNTER R5.1 reports can be harvested into Alma, and then users can review these reports in Analytics.
For ‘Item Reports’ (IR) not all “parent” fields are supported in Alma and in Analytics.

Mandatory parent fields for IRA1 in R5.1 are:
ParentTitle
ParentAuthors
ParentArticleVersion
ParentDOI
ParentProprietaryID
ParentPrintISSN
ParentOnlineISSN
Parent_URI
(See https://cop5.countermetrics.org/en/5.0.3/04-reports/04-item-reports.html)

These fields should be supported by Alma and Analytics.