Specific SRAM register. Since registers may have different sizes depending on the data type of the object (type and subtype), the writing operations only must be performed if the data type of each object (type and subtype) is known. In case data types were not similar, the final configuration could result erroneous.
Sources for this description
Multiple manufacturers; see the original MIB MIB copies (LibreNMS/Observium Community)Teldat MIB copies (MibBrowser.online)