Possibilities of Re-employment into Gorvernment.

Was dismissed in 2017 for a strike, currently reapp**** for a post in another government department, I was appointed and signed on the 1st July 2023. On the 4th July 2023 I was stopped for my name/ persal has to be unblocked by treasury. ? What does it take to get cleared and how long does it take, Any possibility of reemployment.