Informix Error -232

-232 A SERIAL column column-name may not be updated.

You cannot alter the contents of a column with the SERIAL or SERIAL8 or BIGSERIAL data type in the UPDATE statement, even when the updating value is zero. (You can specify a value of zero for a serial column when you use the INSERT statement; the database server ignores the zero and inserts a generated number.) Revise the statement so that only nonserial columns are updated.