https://userapps.support.sap.com/sap/support/knowledge/en/3725756
3725756 - LTVD Monitoring is no longer available in GTS edition for SAP HANA | SAP Knowledge Base...
The "LTVD Monitoring" button, which was available in GTS 11 for monitoring suppliers in "Display Preference Determination Log", is no longer present in GTS E4H.