Considering the two frameworks available in TMForum (SID & Metric Groups Poster), are there any specific Use Cases to which one should be applied instead of the other. TMForum provides documentation associating metrics to both. Is there any connection point or complementarity between them? What are the main differences?In a business case that I checked, They were mapping metrics per data domain/subdomain, using SID. Is this a normal approach, or is the Metric Poster a better one?