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MySQL error code

MySQL error 1231

MySQL server error 1231 is ER_WRONG_VALUE_FOR_VAR, reported with SQLSTATE 42000.

Variable '%s' can't be set to the value of '%s'
Error1231
NameER_WRONG_VALUE_FOR_VAR
SQLSTATE42000
GroupServer errors

In other databases

Source: MySQL 8.4 Error Reference