Insolvency with SARS?

SARS did not accept my tax return for refund this year. I disputed this and the dispute was disallowed for the following reason:

2015 tax return to be submitted on the after insolvency number

What does that mean? Why am I not entitled to claim back on my car allowance as I have a detailed logbook for this.

Were you declared insolvent during the year?

yes in sep 2012

You would have needed to re-register with SARS for a new tax number and then submitted using the new number.