Free tool

P04: Payment Request [n] already exists with the same details

An NDIA bulk payment request rejection code, from the NDIA’s own guide (December 2025).

P04

The message

“Payment Request [n] already exists with the same details”

What it means

A payment request with the same details already exists (a duplicate).

Other payment codes

P03: Requested amount of [$] is more than the participant budget amount of [$]
P05: Maximum allowed claims for given Claim Reference Number reached.

See every NDIA claim code

What this tool follows

NDIS myplace provider portal: Bulk payment requests self-help guide for providers (December 2025): Part 3, payment request rejections

General information only, not financial, legal or claiming advice. Always check a claim against the current official documents.

Questions people ask

What does NDIS claim rejection P04 mean?

P04: "Payment Request [n] already exists with the same details" A payment request with the same details already exists (a duplicate).

More free tools

See all tools →

NDIS Bulk Claim File Checker

Check a bulk payment CSV against the NDIA format before you upload it. Runs in your browser.

Open the tool

NDIS Invoice Generator

A correctly laid-out NDIS invoice with item numbers, ready to print or save as PDF.

Open the tool

ABA Bank File Checker

Validate an ABA (Cemtex) direct-entry file line by line before it reaches the bank.

Open the tool

Rostery does this for you

Stop working it out by hand

Rostery applies the right price, award rate and rule to every shift, invoice and claim automatically. Book a demo and we’ll show you on your own roster.

Book a demo See the features