GDM2008 - ESRI:104028

WKT

GEOGCS["GDM2008", 
	DATUM["Geocentric_Datum_of_Mauritius_2008", 
		SPHEROID["GRS_1980", 6378137.0, 298.257222101]], 
	PRIMEM["Greenwich", 0.0], 
	UNIT["Degree", 0.0174532925199433]]

WKT2

GEOGCRS["GDM2008", 
	DATUM["Geocentric_Datum_of_Mauritius_2008", 
		ELLIPSOID["GRS_1980", 6378137.0, 298.257222101]], 
	PRIMEM["Greenwich", 0.0], 
	CS[ellipsoidal, 2], 
	AXIS["Longitude (lon)", east, 
		ORDER[1]], 
	AXIS["Latitude (lat)", north, 
		ORDER[2]], 
	ANGLEUNIT["Degree", 0.0174532925199433], 
	ID["Esri", "104028"]]

Data from @esri/proj-codes

{
  "wkid": 104028,
  "latestWkid": 104028,
  "macro": "PE_GCS_GDM2008",
  "name": "GDM2008",
  "wkt": "GEOGCS[\"GDM2008\",DATUM[\"Geocentric_Datum_of_Mauritius_2008\",SPHEROID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]]",
  "wkt2": "GEOGCRS[\"GDM2008\",DATUM[\"Geocentric_Datum_of_Mauritius_2008\",ELLIPSOID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],CS[ellipsoidal,2],AXIS[\"Longitude (lon)\",east,ORDER[1]],AXIS[\"Latitude (lat)\",north,ORDER[2]],ANGLEUNIT[\"Degree\",0.0174532925199433],ID[\"Esri\",\"104028\"]]",
  "description": "GDM2008",
  "authority": "Esri",
  "version": "12.7.0",
  "deprecated": "no",
  "areaname": "Mauritius",
  "extent": {
    "slat": -23.81,
    "nlat": -8.43,
    "llon": 53.8,
    "rlon": 67.05
  }
}