To be able to run light weight incremental updates, the following rules have to be observed:

• No empty files in the input data.zip. If empty files, even only with headers, are supplied this will lead to failure in the transformations step.
• Always required - custom_attributes_values.csv

Depending on the case, the following csv files should be present in the input data.zip:

• Existing product added to category (but no other updates)

  categories.csv,
  product.csv,
  custom_attributes_values.csv with at least operation_type attribute

• Existing product removed from category (but no other updates)

  categories.csv,
  product.csv,
  custom_attributes_values.csv with at least operation_type attribute

• Product updated (but no changes to categories)

  custom_attributes_meta.csv,
  custom_attributes_values.csv
  and/or custom_variant_attributes.csv

• Product added (but no changes to categories)

  custom_attributes_meta.csv,
  custom_attributes_values.csv
  and/or custom_variant_attributes.csv,
  products.csv

• Product deleted

  only item_id and operation delete have to be set