diff --git a/generateCSVUnknown.py b/generateCSVUnknown.py
new file mode 100644
index 0000000..a86a7bc
--- /dev/null
+++ b/generateCSVUnknown.py
@@ -0,0 +1,41 @@
+from ecosystemDataManager.ecosystemDataManager import EcosystemDataManager
+from ecosystemDataManager.group import Group
+import csv
+import sys
+
+if __name__ == '__main__':
+	if len(sys.argv) < 2:
+		print("Usage:", sys.argv[0], "<ecosystem> [<file>]")
+		sys.exit(1)
+	if len(sys.argv) > 2:
+		file = sys.argv[2]
+	else:
+		print("file not provided. using default.")
+		file = "versionsWithUnknownLicenses.csv"
+	try:
+		open(file)
+		print("file loaded")
+		file = open(file, "a")
+		file = csv.writer(file, delimiter = ';')
+	except Exception as e:
+		file = open(file, "w")
+		file = csv.writer(file, delimiter = ';')
+		file.writerow(["ecosystem","package","version","group","author","email","repository","licenses","normalized","parents"])
+		print("file not loaded. initialized.")
+	ecosystem = sys.argv[1]
+	ecosystemDataManager = EcosystemDataManager(ecosystem)
+	for package in ecosystemDataManager.getPackages():
+		for version in package.getVersions():
+			if not version.getDatetime():
+				continue
+			for license in version.getLicenses():
+				if license.getGroup() == Group.NONE or license.getGroup() == Group.UNKNOWN or license.getGroup() == Group.UNDEFINED:
+					group = license.getGroup().name
+					author = version.getAuthor()
+					email = version.getEmail()
+					repository = package.getRepository()
+					licenses = ", ".join(version.getOriginalLicenses())
+					normalized = ", ".join([str(license) for license in version.getLicenses()])
+					parents = version.getContextSize()
+					file.writerow([ecosystem, package, version, group, author, email, repository, licenses, normalized, parents])
+					break
\ No newline at end of file