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M06: GST code selected is incorrect

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

M06

The message

“GST code selected is incorrect”

What it means

The GST code is not valid for the claim.

Other manual codes

M01: Support start and/or end dates are not valid
M02: Product selected is incorrect.
M03: Insufficient evidence or authorisation provided
M04: Incorrect participant, service booking or provider selected
M05: Selected quantity or unit price is incorrect.
M07: Payment request could not be successfully submitted due to some reason.

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 M06 mean?

M06: "GST code selected is incorrect" The GST code is not valid for the claim.

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