The string contains an untranslatable character during Fastexport - response (3) by SuSeSi

format "text" is used for character data types like CHAR, VARCHAR, LONG VARCHAR etc. What you are doing here is exporting integer data types in text format. While this scenario will work in some cases but it is not recommended to use TEXT format for integer data types.
 
See FastExport manual for details. Here is what it says:

Note: TEXT format should only be specified for character data. Do not
specify TEXT format for binary data, such as, INTEGER, BYTEINT,
PERIOD, and other binary data. Depending on the actual byte values of
the binary data, unexpected results may occur.