ᐅ Wall waterproofing not compliant with standards, minor defect

Hello,
we are currently building a single-family house in Baden-Württemberg with a general contractor, and the shell structure has just been completed.
During the inspection with our expert, it was noticed that the masonry waterproofing was not carried out fully in compliance with the standards.

It should have been implemented as shown in the top image; unfortunately, the yellow-marked area is missing. The membrane has not been wrapped around the strip foundation but is only laid horizontally.

I have not yet spoken with the general contractor because I am still unsure about how to proceed.
What options do I have? Which ones are reasonable and proportionate?
Is this something where I should demand a defect repair? Or can it be overlooked if everything else is correct? How critical is the missing part?

So far, I am satisfied with the contractor and somewhat hesitant/afraid to disturb the good relationship.

Has the facade work already started?
I’m quite sure it hasn’t been forgotten but will be done later. A membrane is not necessarily required.
Try searching for "Remmers 2k".
Just before starting the facade, a bituminous thick coating will likely be applied.

This is definitely completed.
The bitumen thick coating is actually still underneath the membrane. So everything is as it should be, except that it was not applied/folded around the edge (as it looks in the lower picture).

Meyer37 schrieb:

Which ones are reasonable and proportionate?

Meyer37 schrieb:

Is this something for which I should request a defect remediation?

Meyer37 schrieb:

How critical is the absence?

Your questions should be answered by the expert...

Meyer37 schrieb:

During the inspection with our expert

... or what did he say?

The expert will classify this missing waterproofing in the report as a major defect that must be corrected.

In our case, it was not installed immediately either. The reason given was that it could easily be damaged during the initial further construction work.