SAP Message UMG126 - Language could not be mapped to a code page.

Diagnosis
The initialization of the SPUMG Language List failed because a languagecould not be mapped to a code page. This is likely because a language isnot configured properly.

Procedure
Find out the affected language
Execute report RSCPINST or RSCP0018 and check for any problems reportedthere.
Check for the correct the language <-> code page mapping in table TCP0C
Sometimes a language is defined as logon language (profile parameterzcsa/installed_languages) but the correct code page assignment ismissing in table TCP0C.
If you cannot find a problem in the I18n system configuration you cancall the function module "SCP_CODEPAGE_FOR_LANGUAGE" for all configuredlanguages (content of table TCP0I, record NAME = 'processed_languages',ACTIVE = 'X') in transaction SE37. The exporting parameter CODEPAGE willbe empty for languages for which cannot be assigned a code page. Providethe correct language-code page mapping for these languages.