Fuerteventura height - EPSG:9396

WKT

VERTCS["Fuerteventura_height", 
	VDATUM["Fuerteventura"], 
	PARAMETER["Vertical_Shift", 0.0], 
	PARAMETER["Direction", 1.0], 
	UNIT["Meter", 1.0]]

WKT2

VERTCRS["Fuerteventura_height", 
	VDATUM["Fuerteventura"], 
	CS[vertical, 1], 
	AXIS["Gravity-related height (H)", up, 
		LENGTHUNIT["Meter", 1.0]], 
	ID["EPSG", "9396"]]

Data from @esri/proj-codes

{
  "wkid": 9396,
  "latestWkid": 9396,
  "macro": "PE_VCS_FUERTEVENTURA_HT",
  "name": "Fuerteventura_height",
  "wkt": "VERTCS[\"Fuerteventura_height\",VDATUM[\"Fuerteventura\"],PARAMETER[\"Vertical_Shift\",0.0],PARAMETER[\"Direction\",1.0],UNIT[\"Meter\",1.0]]",
  "wkt2": "VERTCRS[\"Fuerteventura_height\",VDATUM[\"Fuerteventura\"],CS[vertical,1],AXIS[\"Gravity-related height (H)\",up,LENGTHUNIT[\"Meter\",1.0]],ID[\"EPSG\",\"9396\"]]",
  "description": "Fuerteventura height",
  "authority": "EPSG",
  "version": "9.8.13(12.9.0)",
  "deprecated": "no",
  "areaname": "Spain - Canary Islands - Fuerteventura",
  "extent": {
    "slat": 27.99,
    "nlat": 28.81,
    "llon": -14.58,
    "rlon": -13.75
  }
}