Why might you experience different batch sizes when batching with a family field designated?

When batching documents with a family field designated, it's important to understand how the system handles family groups within the batching process. Option C states that family members are included in batches regardless of differing batch unit fields. This means that when documents are related as part of a family—often meaning they are linked or associated in some significant way—they will all be included together in the same batch, even if they do not share the same specific units of measure or characteristics that might typically define how batches are formed.

In practice, this leads to variability in the batch sizes since the inclusion of all family members ensures that every related document is accounted for in the same batch. Thus, if some families have a different number of members or varying attributes, the total batch size for documents tied together by their family relationship can be inconsistent.

The other responses don't appropriately match the logic of how batching with family fields operates. For instance, evenly splitting family groups across batches (the first option) contradicts the concept of keeping related documents together. Limits on maximum batch sizes (the second option) typically refer to the overall capacity of the system to handle documents but don't affect the relationship of family members. Lastly, requiring each batch to contain a specific document type (the fourth option) doesn’t