# Bulk Request Limits
## Overview
Our default maximum batch size is **200** items. If there are exceptions to it and an endpoint uses a different limit, the API reference for that endpoint specifies it.
Endpoints that allow multiple changes in a single request (bulk or batch operations) are subject to these size limits to ensure stable performance. Exceeding the maximum batch size for an endpoint typically results in a **400 Bad Request** with a message indicating the payload or array size limit.
## Bulk endpoints and limits
| Service | Endpoints | Maximum batch size |
| --------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------ |
| [Product Service](/api-references/api-guides/products-labels-and-brands/product-service.md) | • Creating multiple products
• Upserting multiple products
| 200 |
| [Price Service](/api-references/api-guides/prices-and-taxes/price-service.md) | • Creating multiple prices
• Upserting multiple prices
• Deleting multiple prices from a price list
• Creating multiple prices for a price list
• Upserting multiple prices in a price list
| 200 |
| [Availability Service](/api-references/api-guides/orders/availability.md) | • Creating multiple product availabilities
• Upserting multiple availabilities information of a product
• Deleting availability information of a product
| 200 |
| [Category Tree Service](/api-references/api-guides/catalogs-and-categories/category-tree.md) | • Updating assignment of resources to a category
• Assigning resources to a category
| 200 |
| [Customer Segment Service](/api-references/api-guides/companies-and-customers/customer-segments.md) | • Creating segments in bulk
• Upserting segments in bulk
• Deleting segments in bulk
• Updating customer assignments in bulk
• Removing customer assignments in bulk
• Updating item assignments in bulk
• Removing item assignments in bulk
| 200 |
| [Schema Service](/api-references/api-guides/utilities/schema.md) | • Creating custom instances in bulk
• Upserting custom instances in bulk
| 200 |
| [Cart Service](/api-references/api-guides/checkout/cart.md) | • [Updating multiple products in cart](https://developer.emporix.io/api-references/api-guides/checkout/cart/api-reference/cart#put-cart-update-multiple-items-in-cart) | 50 |
| [Shipping Service](/api-references/api-guides/delivery-and-shipping/shipping-1.md) | • [Creating multiple delivery times](https://developer.emporix.io/api-references/api-guides/delivery-and-shipping/shipping/api-reference/delivery-times-management#post-shipping-create-delivery-times-bulk) | 50 |
In addition to per-endpoint batch size limits, see the following:
* **Request/response size for buffered (non-streamed) requests**: 10 MB
* **Request URL size**: 10 KB
* **Request header size**: 60 KB
## Best practices
* Split large datasets into multiple requests if you exceed the limit (for example, more than 200 products in two or more calls for product bulk).
* Stay within the 10 MB request size for the entire request body, including JSON structure.
* Handle 207 Multi-Status responses for bulk operations; each item in the response array corresponds to the same index in the request and may have a different status code.
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