CTP- Temporary account assignment during VA01 ?

Hi Experts,

I am getting a message during the CTP check in the sales order creation (VA01) in ECC. Below is the message once I clicks on planning log for CTP check.

What is the "Temporary account assignment" and How can I remove from this planning log to execute CTP perfectly.

I could not see any orders in below mentioned transaction once I saved the sales orders in ECC.

/SAPAPO/ATREE_DSP - ATP Tree Structures

/SAPAPO/RRP_ATP2PPDS - Conversion ATP Tree Structures -> Production Planning

Could some one please help me what I am missing here?

Thanks,