Informix Error -7546: Unknown routine type <text>, routine type must be one of 'f' </text> or 'p'.

Reasons / Common Causes

-7546 fires when mi_create_signature() is called with an invalid routine type — per the official guidance.

1. A routine type other than 'f' (function) or 'p' (procedure) passed to mi_create_signature(), per the official guidance — the direct, only cause.

Solutions / Resolution

1. Specify either 'f' or 'p' as the routine type, per the official guidance.

Examples

An invalid routine type

mi_create_signature(conn, "compute_total", 'x', ...);
/* -7546: 'x' is not a valid routine type */

Corrected

mi_create_signature(conn, "compute_total", 'f', ...);

Diagnostic Checks

1. Check the routine-type character passed to mi_create_signature(), and confirm it's 'f' or 'p'.

Related Errors / Related Topics

• -7531 — "Invalid user defined routine type: must be function or procedure." A related routine-type restriction, at UDR-lookup time rather than at mi_create_signature() call time.

mi_create_signature() was called with a routine type other than 'f'/'p' — correct it.