Unusual play and question

[Jurassic Referee]

Originally posted by tnroundballref
So we put the ball back in play with A1 inbounding to A2 and shot a three pointer that was good. After B1 grabbed the ball but before the ball was inbounded the horn starts going off and the score keeper is beckoning me to the table. I walk over and the scorekeeper (who really should not have been put in a position to keep the book) shook as she told me she had made a mistake and that the last team B foul was actually the 7th team foul.

As soon as B1 grabbed the ball after the made 3pointer,the ball became alive-Rule6-1-2(b). The error is no longer correctable,as per Rule2-10-2.