Error : While importing Vendor using Vendors V2 (F&O)

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Posted on by Raj Borad

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Hi all,

We are trying to import the Vendor into the system (FO) and getting the following error.
Results. update not allowed for field 'VendVendorV2Entity.VendorAccountNumber'

Although we tried Manual as well as continuous setup in Number seq. for the Import. But getting different errors related to Party Number or Vendor Account Number.

Manual:

Results. update not allowed for field 'VendVendorV2Entity.VendorAccountNumber'

Continuous:

Results. Field 'Vendor account' does not allow editing.
Results. Number does not match format P######.
Results. Field 'Vendor account' does not allow editing.
Results. Number does not match format P######.
Results. Validation of field 'Company registration number' failed
Results. Validations failed

After Auto-generated tick in mapping for VENDORACCOUNTNUMBER:
Error: Results. update not allowed for field 'VendVendorV2Entity.VendorAccountNumber'

We tried in other instance and Vendor is imported.

If anyone have any details related to this issue, please share your suggestions.

Thank you,

Raj D Borad

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Dynamics 365 Finance

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Abhilash Warrier 7,274 Super User 2026 Season 1 on at

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Hi Raj,

Could you please review the below –

Ensure the data entities are updated, since you have mentioned it is working in other instances. Please review the mapping and other details are the same.

The error "update not allowed for field 'VendVendorV2Entity.VendorAccountNumber'" indicates that the field is set to read-only. You need to ensure that the VendorAccountNumber field is editable in your data entity configuration.

For the continuous setup, ensure that the number sequence format matches the expected format (e.g., P######). If the format does not match, you will receive validation errors.

The validation error for the 'Company registration number' field indicates that the data being imported does not meet the required format or validation rules. Ensure that the data conforms to the expected format and validation criteria.

Try Refreshing the entities, sometime it works after refreshing the Data entities.

If this helped, please mark it as "Verified" for others facing the same issue.
Keep in mind that it is possible to mark more than one answer as verified.

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Layan Jwei 8,165 Super User 2026 Season 1 on at

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Hi,

Do you want the vendor number to be auto generated?

If yes, then before you import the excel, remove the whole vendor account number column from the excel, then import.

Vendors should be created successfully

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Alireza Eshaghzadeh 14,839 Super User 2026 Season 1 on at

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Hi,
If you want the Vendor number to be assigned automatically using the number sequence setup shown in your screenshot, you need to activate the “Auto-generated” option for the VENDORACCOUNTNUMBER field in the DMF import configuration before starting the import.

You can apply the same approach for the VENDORPARTYNUMBER field as well.

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BillurSamdancioglu 20,636 Most Valuable Professional on at

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Can you remove the number sequence before import of the data?

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Atul_0215 60 on at

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Hi Raj Borad,
I faced the same issue before while importing vendors using Vendors V2. Even after setting the number sequence to auto-generate in both the frontend and the manifest file, I still got the same error:
Results. update not allowed for field 'VendVendorV2Entity.VendorAccountNumber'

Here’s what worked for me:
Steps I Followed:

I removed the values for "Address Valid From" and "Address Valid To" in the Excel file.

I also cleared the value for Vendor Party Number.

I set the Vendor Account Number number sequence to Continuous.

In the Excel file, I left the Vendor Account Number field blank so the system could auto-generate it.

After doing this, the import worked successfully.

Note: If you're using auto-generated numbers for vendors or customers, always leave those fields blank in the Excel file.

If you are importing package from third party tool like Postman then you need to set Auto Generate true in manifest file in your package.

Hope this helps!

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Raj Borad 1,560 on at

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Thank you all for your valuable time and inputs.

Regards,

Raj D Borad

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