FBRA Error: 'Document XXXXXXXXX is not purely a clearing document,

An mistake was encountered successful FBRA: 'Document XXXXXXXXX is not purely a clearing document,' and nary further details were provided successful the mistake message.

Here's what happened:

1. The idiosyncratic posted a lawsuit outgo papers done F-28.
2. They manually allocated the outgo to 2 DR documents arsenic afloat payment.
3. Due to the erroneous posting of the DZ document, the idiosyncratic needed to reverse the clearing papers done FBRA, but the supra mistake was encountered.

Could you delight assistance america resoluteness this mistake and explicate what triggered it?

Thanks