Production version & contains inconsistencies

What causes this issue?

<DS:GLOS.3526C38DAFAB52B9E10000009B38F974>Production version</> &V1&
was due to be selected/costed, but the system established the
following:

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

the quantity structure date of the cost estimate does not agree with
the validity period of the production version
or
the lot size of the cost estimate does not agree with the lot size
range of the production version.

System Response

Production version &V1& was not included, and production version &V2&
was costed instead.

How to fix this error?

Check either the lot size or the quantity structure date of production
version &V1& in the material master.
<DS:TRAN.MM02>Change Material</>

Error message extract from SAP system. Copyright SAP SE.