Negative stock is possible for batches, as you can read in KBA 1919973 - Error message M7042 is not raised in post goods issue
The message you have is from availability check, which does not go below 0. Change the check to KP and you can proceed
Negative stock is possible for batches, as you can read in KBA 1919973 - Error message M7042 is not raised in post goods issue
The message you have is from availability check, which does not go below 0. Change the check to KP and you can proceed