Using ROWID columns

Automatic ROWID columns is not a common database feature.

Rowids are implicit primary keys generated by the database engine. Not all database servers support rowids:

Table 1. Database server support of rowid
Database Server Type Rowid keyword Rowid type ROWID support
IBM® DB2® LUW No N/A Yes, see details
IBM Informix® ROWID INTEGER Yes, native SQL feature
IBM Netezza No N/A Yes, see details
Microsoft™ SQL Server (2) No N/A No, see details
Oracle® MySQL / MariadDB No N/A No, see details
Oracle Database Server ROWID CHAR(18) Yes, see details
PostgreSQL OID internal type Yes with pre-12 versions. No since version 12, see details
SAP® ASE No N/A No, see details
SAP HANA® No N/A No, see details
SQLite ROWID BIGINT Yes, see details

Informix fills the SQLCA.SQLERRD[6] register with the ROWID of the last updated row. This register is an INTEGER and cannot be filled with rowids having CHAR(*) type.

Search for ROWID and SQLCA.SQLERRD[6] in your code and review the code to remove the usage of rowids.