Cadastre 1997 - ESRI:115704

WKT

VERTCS["Cadastre_1997", 
	DATUM["D_Cadastre_1997", 
		SPHEROID["International_1924", 6378388.0, 297.0]], 
	PARAMETER["Vertical_Shift", 0.0], 
	PARAMETER["Direction", 1.0], 
	UNIT["Meter", 1.0]]

WKT2

VERTCRS["Cadastre_1997", 
	DATUM["D_Cadastre_1997", 
		ELLIPSOID["International_1924", 6378388.0, 297.0]], 
	CS[vertical, 1], 
	AXIS["Ellipsoidal height (h)", up, 
		LENGTHUNIT["Meter", 1.0]], 
	ID["Esri", "115704"]]

Data from @esri/proj-codes

{
  "wkid": 115704,
  "latestWkid": 115704,
  "macro": "PE_VCS_CADASTRE_1997",
  "name": "Cadastre_1997",
  "wkt": "VERTCS[\"Cadastre_1997\",DATUM[\"D_Cadastre_1997\",SPHEROID[\"International_1924\",6378388.0,297.0]],PARAMETER[\"Vertical_Shift\",0.0],PARAMETER[\"Direction\",1.0],UNIT[\"Meter\",1.0]]",
  "wkt2": "VERTCRS[\"Cadastre_1997\",DATUM[\"D_Cadastre_1997\",ELLIPSOID[\"International_1924\",6378388.0,297.0]],CS[vertical,1],AXIS[\"Ellipsoidal height (h)\",up,LENGTHUNIT[\"Meter\",1.0]],ID[\"Esri\",\"115704\"]]",
  "description": "Cadastre 1997",
  "authority": "Esri",
  "version": "10.4.0",
  "deprecated": "no",
  "areaname": "Mayotte - onshore",
  "extent": {
    "slat": -13.05,
    "nlat": -12.61,
    "llon": 44.98,
    "rlon": 45.35
  }
}