Dassault Systèmes requires your 3DEXPERIENCE ID and 3DPassport fields to abide by SAML Federation protocol.  We documented these requirements in QA00000304788 and within the help.3ds.com web page.   Below is a summary of that information: 

Requirements for 3DPassport fields for first name and last name:

• Each data field is at least 1 character  
• Each data field does not exceed 255 characters  
• Do not use any of the following special characters: ' <', ' >', '(', ')', '[', ']', '{', '}', '\', ':', '/', ' &', ';' 

Requirements for 3DEXPERIENCE ID username: 

• Your ID does not exceed 64 characters  
• Your ID is at least 8 characters long
• Your ID only contains alphanumeric characters,  '-', or '.'  

Requirements or password:

• Your password does not contain your username
• Your password does not contain your first name
• Your password does not contain your last name
• Your password is at least 8-characters long
• Your password contains at least 1 number
• Your password contains at least 1 letter
• Your password contains at least 1 lowercase character
• Your password contains at least 1 uppercase character
• Your password does not contain special characters other than the following:  I # = @ [1]"_ { 1}\$ % ()*+-