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Informix Error -7520: Argument argument_name is NULL.

Cause and resolution

Argument argument_name is NULL.

Verify arguments to DataBlade API calls. NULL was passed but not expected.

Oninit® Troubleshooting Guidance

Reasons / Common Causes

-7520 fires when a DataBlade API call receives NULL for an argument that doesn't expect it — per the official guidance.

  1. NULL passed for the named argument, where it wasn't expected, per the official guidance — the direct, only cause.
Solutions / Resolution
  1. Verify arguments to DataBlade API calls, per the official guidance, and supply a non-NULL value for the named argument.
Examples
N/A

No specific triggering statement is documented beyond an unexpected NULL for the named argument.

Diagnostic Checks
  1. Check the value passed for the argument named in the error message, and confirm it's not NULL where the API doesn't accept that.
Related Errors / Related Topics
  • -7420 — "Argument argument_name is invalid." The general version of this same class of DataBlade API argument-validity error.

A DataBlade API call received NULL for an argument that doesn't accept it — supply a non-NULL value.