The presentation name is not displayed on the CLM detail section of the Call page in CRM online even though the end-user does have access to corresponding objects and fields.
In addition to that, the Call2_Key_Message_vod__c records also get the Clm_Presentation_Name_vod__c field populated.
The end-user does not have access to the CLM Presentation record associated by using the Presentation_ID_vod field on the Call Key Message or the CLM Presentation record does not exist in the organization.
The name in the Presentation Name column currently comes from the Name in the CLM Presentation record associated by using the Presentation_ID_vod field on the Call Key Message rather than the Clm_Presentation_Name_vod__c field.
Be sure the corresponding CLM Presentation record does exist, and the end-user has access to it.
CRM Help Documentation: N/A