Mapping weight values from Zapier to create product variants in Shopify

Hi ​@Niki C. 

Help us have more info by posting these screenshots:

• how your Zap steps are outlined
• how your Zap steps are configured in EDIT mode with the field mappings visible in the CONFIGURE tab
• any encountered errors

Hi Troy, 

Thanks for your reply. 

When I manually enter the product entry in Shopify. I want to fill out product entry like below, prices, compare-at price, cost per item, profit, SKU, Barcode, Weight (in the shipping field). 

However, when I create a product entry via zappier (using create Product variant field, this is the only field for the information I need), but it creates a product variant not product like i show above.

I have only one product, no option, no need to become a product variant, but i do not see other choices

I use the shopify workflow per below:

​@Niki C. 

Can you post screenshots of the encountered error when testing the Zap step?

To create a Product Variant you need to map the ID of the Shopify Product.

That field mapping is not shown in your screenshots.

You need to first create a Shopify Product or find an existing Shopify Product before you add a new Product Variant.

NOTE: When creating a Product for the first time, it automatically create the default Product Variant.

Hi ​@Niki C.,

I saw your post and wanted to check in—did you get a chance to try Troy’s suggestion?

We’re happy to dive deeper if you still need help.

My question is not encountering an error, but the product entry is missing SKU, weight. To fulfill this purpose, I create the product variant step, but it creates an extra variant instead of updating the existing product sku. 

Just “create product” does not have SKU and weight (shipping weight) field, so i created extra step “product variant”, but i would create extra product variant that i do not need. 

1

Default Title

optionValues

1

Options Option Values ID

gid://shopify/ProductOptionValue/5983460360467

Options Option Values Name

Default Title

Options Option Values Has Variants

priceRangeV2

maxVariantPrice

Price Range V 2 Max Variant Price Amount

0.0

Price Range V 2 Max Variant Price Currency Code

HKD

minVariantPrice

Price Range V 2 Min Variant Price Amount

0.0

Price Range V 2 Min Variant Price Currency Code

HKD

Product Type

Physical

Published At

Status

DRAFT

Tags

Template Suffix

Total Inventory

0

Updated At

2025-07-25T06:40:26Z

variants

Variants Nodes

1

Variants Nodes Available For Sale

Variants Nodes Barcode

Variants Nodes Compare At Price

Variants Nodes Created At

2025-07-25T06:40:25Z

deliveryProfile

Variants Nodes Delivery Profile Id

gid://shopify/DeliveryProfile/110236958995

Variants Nodes Delivery Profile Name

General Profile

Variants Nodes Delivery Profile Default

Variants Nodes Delivery Profile Origin Location Count

1

Variants Nodes Display Name

| niki - Default Title

inventoryItem

Variants Nodes Inventory Item Country Code Of Origin

Variants Nodes Inventory Item Created At

2025-07-25T06:40:25Z

Variants Nodes Inventory Item Id

gid://shopify/InventoryItem/54053600723219

Variants Nodes Inventory Item Inventory History Url

Variants Nodes Inventory Item Sku

Variants Nodes Inventory Item Tracked

Variants Nodes Inventory Item Unit Cost

Variants Nodes Inventory Item Updated At

2025-07-25T06:40:25Z

Variants Nodes ID

gid://shopify/ProductVariant/52108720832787

Variants Nodes Inventory Policy

DENY

Variants Nodes Inventory Quantity

0

Variants Nodes Position

1

Variants Nodes Price

0.00

product

Variants Nodes Product Id

gid://shopify/Product/10077759734035

Variants Nodes Sku

Variants Nodes Taxable

Variants Nodes Tax Code

Variants Nodes Title

Default Title

Variants Nodes Updated At

2025-07-25T06:40:25Z

selectedOptions

1

Variants Nodes Selected Options Name

Title

Variants Nodes Selected Options Value

Default Title

Vendor

SuperMochi 香港日本亞洲產品-全球購

metafields

Metafields Nodes

1

Metafields Nodes ID

gid://shopify/Metafield/44826081788179

Metafields Nodes Description

Metafields Nodes Namespace

custom

Metafields Nodes Key

cost_hkd_

Metafields Nodes Value

14.0

2

Metafields Nodes ID

gid://shopify/Metafield/44826081820947

Metafields Nodes Description

Metafields Nodes Namespace

custom

Metafields Nodes Key

dimension_length

Metafields Nodes Value

1.0

3

Metafields Nodes ID

gid://shopify/Metafield/44826081853715

Metafields Nodes Description

Metafields Nodes Namespace

custom

Metafields Nodes Key

dimension_height

Metafields Nodes Value

1.0

4

Metafields Nodes ID

gid://shopify/Metafield/44826081886483

Metafields Nodes Description

Metafields Nodes Namespace

custom

Metafields Nodes Key

dimension_width

Metafields Nodes Value

1.0

5

Metafields Nodes ID

gid://shopify/Metafield/44826081919251

Metafields Nodes Description

Metafields Nodes Namespace

custom

Metafields Nodes Key

gross_weight_g_

Metafields Nodes Value

1.0

6

Metafields Nodes ID

gid://shopify/Metafield/44826081952019

Metafields Nodes Description

Metafields Nodes Namespace

custom

Metafields Nodes Key

net_weight_g_

Metafields Nodes Value

1.0

7

Metafields Nodes ID

gid://shopify/Metafield/44826081984787

Metafields Nodes Description

Metafields Nodes Namespace

custom

Metafields Nodes Key

shipping_weight_g_

Metafields Nodes Value

1238.375

8

Metafields Nodes ID

gid://shopify/Metafield/44826082017555

Metafields Nodes Description

Metafields Nodes Namespace

custom

Metafields Nodes Key

short_life

Metafields Nodes Value

false

9

Metafields Nodes ID

gid://shopify/Metafield/44826082050323

Metafields Nodes Description

Metafields Nodes Namespace

custom

Metafields Nodes Key

fragile_items

Metafields Nodes Value

false

10

Metafields Nodes ID

gid://shopify/Metafield/44826082083091

Metafields Nodes Description

Metafields Nodes Namespace

custom

Metafields Nodes Key

canned_pkg

Metafields Nodes Value

false

11

Metafields Nodes ID

gid://shopify/Metafield/44826082115859

Metafields Nodes Description

Metafields Nodes Namespace

custom

Metafields Nodes Key

_price_hk

Metafields Nodes Value

20.0

12

Metafields Nodes ID

gid://shopify/Metafield/44826082148627

Metafields Nodes Description

Metafields Nodes Namespace

custom

Metafields Nodes Key

purchasing_agent

Metafields Nodes Value

false

Hi ​@Niki C.,

Suppose you're trying to update existing product variants in Shopify via Zapier but are having issues with creating new variants instead. To avoid this, use the "Update Product Variant" action, not "Create Product Variant." You'll need the specific variant ID, which you can find in Shopify, and you can use the "Find Product Variant" action in your Zap to locate it by SKU or another identifier. If some fields (like weight) aren't directly editable, consider using metafields. Always test with sample data to ensure you're updating correctly. Check Shopify's API docs for extra help if needed.

If you have any further questions or need more assistance, feel free to ask.