Solution : https://service.sap.com/sap/support/notes/1282169 (SAP Service marketplace login required)
Summary :
This SAP Note addresses runtime errors TEXTENV_UNICODE_LANGU_INVALID and TEXTENV_KEY_INVALID, occurring due to erroneous residual RFC gateway data during dismantlement. Errors arise from attempts to log on with invalid data. Patches fixing these issues are available for versions 4.6D (patch level 2437), 6.40 (patch level 264), 7.00 (patch level 189), and 7.01 (patch level 25). Users are advised to update to these patch levels to prevent the errors.
Key words :
valid logon data exists, runtime error textenv_unicode_langu_invalid, terms textenv_unicode_langu_invalid, gateway error, textenv_key_invalid occurs, rrmx reason, prerequisites due, rfc connection, work process, patch levels
Related Notes :
1402029 | RRMX creates ABAP dump TEXTENV_KEY_INVALID |
492254 | TEXTENV_KEY_INVALID with the language key <SPACE> |