Does it matter if there is a horizontal slot in the load-bearing wall?

Property management of bearing wall with transverse groove.

According to the national standards, it is clearly stipulated that it is forbidden to open large transverse grooves on walls, especially brick-concrete structures, during the decoration process, because it is easy to directly destroy the wall structure and easily cause the wall to collapse, which is unacceptable to the property.

A load-bearing wall with transverse grooves refers to a wall that supports the weight of the upper floor. It's a black wall on the engineering drawing, which will destroy the whole building structure if it is knocked off.