The available languages in DOKA SaaS is English(EN),German(DE),Spanish(ES),French(FR) and Italian(IT).
To change the user language Go to User Profile Settings[Basic Setting -> User]
The other way is to Launch the transaction DBIUSR [Maintaining User Profiles] from the Launch transaction menu directly.
Enter the User ID to change the Language and press enter key.
The entered User ID profile details will be displayed.
Click on the Change icon available next to Add New icon and the user is allowed to change the language from the Language Drop-down list.
Once click on Save icon the changes is successfully updated in the system.