Federholzrahmen Ikea SULTAN LÖDINGEN - compatible?

Good evening everyone,

I bought the Lödingen slatted frame at Ikea. However, I have a bed frame that I did not buy at Ikea. Now my question is whether the frame is compatible with all beds? I always thought there were standard sizes for beds (e.g., 140 x 200) where the frame, the slatted frame, and the mattress fit. Isn't that the case? Or did I maybe assemble the frame incorrectly?

It would be great if someone could help me!

There are "standard sizes" but no official norm for beds in Germany.
That means a slatted frame or bed with the "official" measurements 140x200 can also be 138.5x201 or 136x199 in size.
And then it might just not fit.
There were even times when not all IKEA slatted frames fit all IKEA beds... ;)

EDIT:
I would measure the inside / support dimensions of your bed yourself and look for a slatted frame accordingly...