The attribute Zalando > sizeRegister is missing or has not been correctly maintained.
Attention: This only applies if you do NOT want to maintain your sizes via the attributes.

Case 1: The attribute is missing

The attribute must therefore be added and maintained with the corresponding sizeRegister.

Case 2: The attribute is maintained

In this case, the Zalando format must be strictly adhered to.

Please therefore check the sizeRegister for accuracy.

Attention: Manually created sizeRegisters are not recognised by Zalando.