LIN/BUS Write Problem

Dear My Friends,

I'm facing the too strange problem I couldn't recognize it, I use MCP2003 LIN/BUS transceiver,
Master send a code = 00 55 f0

BREAK SYNC ID

0x00 0x55 0xf0

When I Read this code I'm writing the message from pc 00900000009ad4
Checksum is fine everything good but master didn't recognize the message

Thanks