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Informix Error -3755

-3755 The selected display-only field tagname cannot be accessed.

The field tag name that is passed to the C function pf_nxfield() is the name of a display-only field. Because the user is not allowed to enter data in a display-only field, the cursor cannot be located in one. Check the tag name that is supplied; if it is the one that you intended, review the attributes of that field, and find out why it has been set display-only.

Oninit® Troubleshooting Guidance

Reasons / Common Causes

-3755 fires when the C function pf_nxfield() is passed the tag name of a DISPLAYONLY field — per the official guidance, the cursor can't be located in a display-only field since the user isn't allowed to enter data there.

  1. A DISPLAYONLY field's tag name passed to pf_nxfield(), per the official guidance — the direct, only cause.
Solutions / Resolution
  1. Check the tag name supplied to pf_nxfield(), per the official guidance.
  2. If it's the one intended, review the field's attributes and find out why it was set DISPLAYONLY, per the official guidance.
Examples
Calling pf_nxfield with a DISPLAYONLY tag
pf_nxfield("cust_name");
/* -3755: cust_name is DISPLAYONLY, so the cursor can't be placed there */
Diagnostic Checks
  1. Check whether the tag name passed to pf_nxfield() is DISPLAYONLY, and either pass a different tag or remove DISPLAYONLY if entry was intended.
Related Errors / Related Topics
  • -3756 — "The selected field tag-name cannot be assigned a value at this time." A related cursor-placement error, about a field not belonging to the current table rather than being marked DISPLAYONLY.
  • -3758 — "The next selected field tag-name is not in the current table." A related pf_nxfield() error, about a field not belonging to the current table rather than being marked DISPLAYONLY.

pf_nxfield() was passed a DISPLAYONLY field's tag name — the cursor can't be placed there; check the tag name and the field's attributes.