How to receive from production order more, than planned?

Hello gurus.

Could you plese help me with the following issue: I need to get rid of the M7064 message, when I try to post in GR from Production order more, than it was planned to produce. The 'Unlimited overdelivery' helps only when I post GR the first time. I.e. if I have production order for 1000 pc planned qty and I've already posted 1500 pc (using 'Unlimited overdelivery'), is it possible to receive 100 pc more without changing the planned qty of the production order?