First, you need to tick the 'Import Product Variants' group to import product Variant.

'Import Product Variants' menu.

After that one wizard open here you can import products with product variants From CSV/Excel.

You can create or update product variants by barcode, name & internal reference.
Please tick this option during import to create record auto for many2many.

Success message looks like below it shows successfully imported records.

The following product template fields are imported.

We see the imported product 'Collar T-Shirt' fields.

Product variants.

The 'Sales' tab in the product 'Collar T-Shirt'.

The 'Purchase' tab in the product 'Collar T-Shirt'.

Product variant imported succesfully.

Product variant details with on hand qty.

You can see the product variant field which is imported.

In Attribute, Our app works only when "Variants Creation Mode" must be set "Instantly".

About Fields

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Column	Product Model	Field Name	Description	Required
A	Product template (product.template)	Unique Identification	You can identify the same name product/product variant by "Unique Identification" field.	Yes
B	Product template (product.template)	Name	Define the product/product variant name.	Yes
C	Product template (product.template)	Can Be Sold?	It takes true by default if not provided.	No
D	Product template (product.template)	Can be Purchased?	It takes true by default if not provided.	No
E	Product template (product.template)	Product Type	In the "Product type" take consumable by default if not provided.	No
F	Product template (product.template)	Category	It takes default category if not provided.	No
G	Product template (product.template)	Unit of Measure	Take the same name as ERP in the "UOM".	No
H	Product template (product.template)	Purchase Unit of Measure	Take the same name as ERP in the "UOM".	No
I	Product template (product.template)	Customer Taxes	Taxes are separated by comma(,). You have to provide customer tax here.	No
J	Product template (product.template)	Vendor Taxes	Taxes are separated by comma(,). You have to provide vendor tax here.	No
K	Product template (product.template)	Description for Customers	You have to write a product description here.	No
L	Product template (product.template)	Invoicing Policy	Enter the same text of selection field the same as ERP in the"Invoice policy" otherwise by default it takes ordered quantities.	No
M	Product template (product.template)	Sales Price	You have to enter the product sales price here.	No
N	Product template (product.template)	Cost	You have to enter the product cost here.	No
O	Product variant (product.product)	variant Attributes	You have to enter the product variant attributes.	No
P	Product variant (product.product)	Attribute Values	You have to enter the product attribute values.	No
Q	Product variant (product.product)	Internal Reference	You have to enter the product internal reference number.	No
R	Product variant (product.product)	Barcode	You have to enter the product barcode number.	No
S	Product variant (product.product)	Weight	You have to enter the product weight.	No
T	Product variant (product.product)	Volume	You have to enter the product volume.	No
U	Product variant (product.product)	Qty On Hand	You have to enter the product on hand quantity.	No
V	Product variant (product.product)	Image path/url	Enter the complete URL or local path in the "Image path/URL".	No
W	Product variant (product.product) / Product template (product.template)	Custom Fields	You can import custom fields from here. Please go to the "Custom Fields" tab for more details.	No

1) Don't remove the column from the sample sheet given, you can leave an empty column if the column is not the required type. You can see the table above for that.

2) Don't change the sample sheet column sequence.

3) Please don't use excel if you don't know the very well sheet formatting which is given in the sample sheet. Use CSV for hassle-free import without format issue. If you want to use excel and want to clear the format then please check this video.
Watch Video

Your CSV/Excel file format must match like below.
In the 'Can be sold & purchased?' take true by default if not provided.
In the 'Product type' take consumable by default if not provided.
Take the same name as ERP in the 'UOM'.

Taxes are separated by comma(,).
Enter the same text of selection field the same as ERP in the 'Invoice policy' otherwise by default it takes ordered quantities.

You can import any number of custom fields. All custom fields must exist on the product.product model.