POSGAR 1994 3D - EPSG:4929

WKT

GEOGCS["POSGAR_1994_3D", 
	DATUM["D_POSGAR_1994", 
		SPHEROID["WGS_1984", 6378137.0, 298.257223563]], 
	PRIMEM["Greenwich", 0.0], 
	UNIT["Degree", 0.0174532925199433], 
	LINUNIT["Meter", 1.0]]

WKT2

GEOGCRS["POSGAR_1994_3D", 
	DATUM["D_POSGAR_1994", 
		ELLIPSOID["WGS_1984", 6378137.0, 298.257223563]], 
	PRIMEM["Greenwich", 0.0], 
	CS[ellipsoidal, 3], 
	AXIS["Latitude (lat)", north, 
		ORDER[1], 
		ANGLEUNIT["Degree", 0.0174532925199433]], 
	AXIS["Longitude (lon)", east, 
		ORDER[2], 
		ANGLEUNIT["Degree", 0.0174532925199433]], 
	AXIS["Ellipsoidal height (h)", up, 
		ORDER[3], 
		LENGTHUNIT["Meter", 1.0]], 
	ID["EPSG", "4929"]]

Data from @esri/proj-codes

{
  "wkid": 4929,
  "latestWkid": 4929,
  "macro": "PE_GCS_POSGAR_1994_3D",
  "name": "POSGAR_1994_3D",
  "wkt": "GEOGCS[\"POSGAR_1994_3D\",DATUM[\"D_POSGAR_1994\",SPHEROID[\"WGS_1984\",6378137.0,298.257223563]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433],LINUNIT[\"Meter\",1.0]]",
  "wkt2": "GEOGCRS[\"POSGAR_1994_3D\",DATUM[\"D_POSGAR_1994\",ELLIPSOID[\"WGS_1984\",6378137.0,298.257223563]],PRIMEM[\"Greenwich\",0.0],CS[ellipsoidal,3],AXIS[\"Latitude (lat)\",north,ORDER[1],ANGLEUNIT[\"Degree\",0.0174532925199433]],AXIS[\"Longitude (lon)\",east,ORDER[2],ANGLEUNIT[\"Degree\",0.0174532925199433]],AXIS[\"Ellipsoidal height (h)\",up,ORDER[3],LENGTHUNIT[\"Meter\",1.0]],ID[\"EPSG\",\"4929\"]]",
  "description": "POSGAR 1994 3D",
  "authority": "EPSG",
  "version": "6.14(12.7.0)",
  "deprecated": "no",
  "areaname": "Argentina",
  "extent": {
    "slat": -58.41,
    "nlat": -21.78,
    "llon": -73.59,
    "rlon": -52.63
  }
}