Dimensions of the base plate do not match

The base slab is usually poured after fine staking out by the surveyor; the batter boards and strings/nails should still be in place. Well, the check for right angles is quickly done, but it is also the foreman's task on-site to at least check the staking out or the batter boards for major inconsistencies.

I just checked the DIN standard again, the 24mm is, as far as I read, the maximum, so just within the tolerance.

Best regards Dirk Grafe

More important than 25mm tolerance is probably that the base plate is not only a parallelogram but also a rectangle. THAT is what I would check.

That's how it is. The house won't collapse just because only 341 mm of a 365 mm wall rests on the base plate at one corner. Tolerances are a measure of the difference between plan and reality, which can still exist even with proper execution. They are not meant to cause panic attacks in builders

But, as Reinhard Mey so nicely puts it: "Then my eyes fall on the calendar, and I'm struck: It's only the 12th today and Thursday!" — who knows how calibrated the original poster's measuring tool is ...