Makassar (Jakarta) NEIEZ - EPSG:5331

WKT

PROJCS["Makassar_Jakarta_NEIEZ", 
	GEOGCS["GCS_Makassar_Jakarta", 
		DATUM["D_Makassar", 
			SPHEROID["Bessel_1841", 6377397.155, 299.1528128]], 
		PRIMEM["Jakarta", 106.8077194444444], 
		UNIT["Degree", 0.0174532925199433]], 
	PROJECTION["Mercator"], 
	PARAMETER["False_Easting", 3900000.0], 
	PARAMETER["False_Northing", 900000.0], 
	PARAMETER["Central_Meridian", 3.192280555555556], 
	PARAMETER["Standard_Parallel_1", 4.45405154589751], 
	UNIT["Meter", 1.0]]

WKT2

PROJCRS["Makassar_Jakarta_NEIEZ", 
	BASEGEOGCRS["GCS_Makassar_Jakarta", 
		DATUM["D_Makassar", 
			ELLIPSOID["Bessel_1841", 6377397.155, 299.1528128]], 
		PRIMEM["Jakarta", 106.8077194444444, 
			ANGLEUNIT["Degree", 0.0174532925199433]], 
		CS[ellipsoidal, 2], 
		AXIS["Latitude (lat)", north, 
			ORDER[1]], 
		AXIS["Longitude (lon)", east, 
			ORDER[2]], 
		ANGLEUNIT["Degree", 0.0174532925199433]], 
	CONVERSION["Mercator", 
		METHOD["Mercator"], 
		PARAMETER["False_Easting", 3900000.0], 
		PARAMETER["False_Northing", 900000.0], 
		PARAMETER["Central_Meridian", 3.192280555555556], 
		PARAMETER["Standard_Parallel_1", 4.45405154589751]], 
	CS[Cartesian, 2], 
	AXIS["Easting (X)", east, 
		ORDER[1]], 
	AXIS["Northing (Y)", north, 
		ORDER[2]], 
	LENGTHUNIT["Meter", 1.0], 
	ID["EPSG", "5331"]]

Data from @esri/proj-codes

{
  "wkid": 5331,
  "latestWkid": 5331,
  "gcsWkid": 4804,
  "macro": "PE_PCS_MAKASSAR_JAKARTA_NEIEZ",
  "name": "Makassar_Jakarta_NEIEZ",
  "wkt": "PROJCS[\"Makassar_Jakarta_NEIEZ\",GEOGCS[\"GCS_Makassar_Jakarta\",DATUM[\"D_Makassar\",SPHEROID[\"Bessel_1841\",6377397.155,299.1528128]],PRIMEM[\"Jakarta\",106.8077194444444],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Mercator\"],PARAMETER[\"False_Easting\",3900000.0],PARAMETER[\"False_Northing\",900000.0],PARAMETER[\"Central_Meridian\",3.192280555555556],PARAMETER[\"Standard_Parallel_1\",4.45405154589751],UNIT[\"Meter\",1.0]]",
  "wkt2": "PROJCRS[\"Makassar_Jakarta_NEIEZ\",BASEGEOGCRS[\"GCS_Makassar_Jakarta\",DATUM[\"D_Makassar\",ELLIPSOID[\"Bessel_1841\",6377397.155,299.1528128]],PRIMEM[\"Jakarta\",106.8077194444444,ANGLEUNIT[\"Degree\",0.0174532925199433]],CS[ellipsoidal,2],AXIS[\"Latitude (lat)\",north,ORDER[1]],AXIS[\"Longitude (lon)\",east,ORDER[2]],ANGLEUNIT[\"Degree\",0.0174532925199433]],CONVERSION[\"Mercator\",METHOD[\"Mercator\"],PARAMETER[\"False_Easting\",3900000.0],PARAMETER[\"False_Northing\",900000.0],PARAMETER[\"Central_Meridian\",3.192280555555556],PARAMETER[\"Standard_Parallel_1\",4.45405154589751]],CS[Cartesian,2],AXIS[\"Easting (X)\",east,ORDER[1]],AXIS[\"Northing (Y)\",north,ORDER[2]],LENGTHUNIT[\"Meter\",1.0],ID[\"EPSG\",\"5331\"]]",
  "description": "Makassar (Jakarta) NEIEZ",
  "authority": "EPSG",
  "version": "7.6.3(10.1.0)",
  "deprecated": "no",
  "areaname": "Indonesia - Sulawesi SW",
  "extent": {
    "slat": -6.54,
    "nlat": -1.88,
    "llon": 118.71,
    "rlon": 120.78
  }
}