3660212 - Candidate unable to log in to the system during onboarding, Error: ???COMMON_Error_Label??? Failure to load pageMetaData - Onboarding

• Candidate cannot log in to the system.
• This issue only impacts certain candidates
• Error message:

???COMMON_Error_Label???
???COMMON_AJAX_EXCEPTION_CONVERTER_ERROR_OCCURRED???
???COMMON_Hide_Error???

• Clcik on ???COMMON_Hide_Error???, show error message:

internalMessage=Failure to load pageMetaData
errorMessage=Failed to execute 'fetch' on 'Window': Failed to read the 'headers' property from 'RequestInit': String contains non ISO-8859-1 code point.

1. Initiate the onboarding process for a candidate.
2. Attempt to log in to the system as the candidate.
3. Observe below error message preventing login:

• internalMessage=Failure to load pageMetaData
• errorMessage=Request constructor: Cannot convert value in record<ByteString, ByteString> branch of (sequence<sequence<ByteString>> or record<ByteString, ByteString>) to ByteString because the character at index 0 has value XXXXX which is greater than XXXX.

Or 

• Error message:

???COMMON_Error_Label???
???COMMON_AJAX_EXCEPTION_CONVERTER_ERROR_OCCURRED???
???COMMON_Hide_Error???

• Clcik on ???COMMON_Hide_Error???, show error message:

internalMessage=Failure to load pageMetaData
errorMessage=Failed to execute 'fetch' on 'Window': Failed to read the 'headers' property from 'RequestInit': String contains non ISO-8859-1 code point.

1. Go to Data Inspector, select Table_USERS_SYSINFO;
2. Search the candidate with username/user sys id filter;
3. If the candidate's Default Locale is incorrect or contains special characters, correct the Default Locale with a standard code. For example, en_US/zh_CN/en_GB and so on.

candidate login issue, candidate cannot login, login system, onboarding login error, sap successfactors onboarding, Failure to load pageMetaData, Request constructor: Cannot convert value in record, onboardee login error, Default Locale , KBA , LOD-SF-OBX-ACC , Accessibility , Problem