Unable to receive complete data into my SPI slave receive buffer?

[Sm.2]

I am using stm32h745zi-q board and I am working on the full duplex SPI. Here I aa using spi1 and spi4 . I used interrupt based at the spi1 means master side and I used DMA for SPI4 means slave side .

Here I am able to get the complete data in the SPI1 rx buffer but I am missing first 8characters in the SPI4 rx buffer where I used DMA.

Is there anything need to add to get the complete data in the spi4 rx buffer?

Thanks & Regards

SM.