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Troubleshooting Bulk Imports Via CSV – BizStackPro Help

BizStackPro Contacts Help Guide

Troubleshooting Bulk Imports Via CSV

Learn how to find CSV import errors, understand common error codes, correct formatting problems, and prepare your contact file for a successful re-import.

Quick Answer

How do you troubleshoot a failed CSV contact import?

Go to Contacts → Bulk Actions, find the import, click Show Stats, and open the Error tab. Use the reported errors to correct the affected CSV rows, standardize the formatting, remove duplicate or invalid values, and then re-import the corrected file.

How Import Troubleshooting Works

A CSV import can fail for several reasons, including incorrect formatting, missing required information, duplicate identifiers, invalid contact IDs, or values that do not match a field's available options.

Instead of guessing what caused the problem, start with the import's error log.

The error information helps identify which rows failed and why so you can correct the CSV before trying the import again.

Fixing the underlying file first can also help reduce repeated failures and incomplete contact imports.

Start with the error log

Use the exact error reported by the import process to determine which field or row needs attention before changing the CSV.

CSV Troubleshooting at a Glance

Import History Contacts → Bulk Actions
Import Details Show Stats
Failure Details Error Tab
Phone Format E.164 Recommended
Unique Values Email, Phone, Contact ID
Best Next Step Fix File, Then Re-Import

Before You Begin

Keep the failed CSV available and review the import details before changing the file.

  • Sign in to your BizStackPro account.
  • Keep a copy of the CSV file that produced the errors.
  • Open Contacts → Bulk Actions to locate the failed import.
  • Use Show Stats and the Error tab before making corrections.
  • Review unique fields such as email, phone, and Contact ID for duplicate values.
  • Check formatting for phone numbers, dates, dropdowns, owners, and other mapped fields.

Step 1: Find Import Errors

Open the failed import details before making changes to your CSV.

Open Bulk Actions

Go to Contacts → Bulk Actions.

Find the Import

Locate the contact import you want to troubleshoot.

Open Show Stats

Click Show Stats next to the import task.

Open the Error Tab

Select the Error tab to review the detailed error messages for failed rows.

Identify the Affected Rows

Use the error information to determine which CSV values need to be corrected.

Fix the reported problem first

Most import problems come from formatting, missing required fields, duplicate values, or mismatched dropdown options. The error log helps you focus on the specific issue.

Common CSV Error Codes and Fixes

Error 1001 — Unknown Error
Meaning: The import encountered an unidentified problem.
Fix: Confirm the file is a true CSV, re-save it, and retry. If necessary, try the import from another browser.
Error 1002 — Multiple Owners Found
Meaning: The Owner value matches more than one user.
Fix: Use the user's unique email address for the Owner field instead of the person's name.
Error 1004 — Invalid Value
Meaning: A value does not meet the requirements of the mapped field.
Fix: Check required fields, remove unsupported characters, and confirm that each value matches the expected field type.
Error 1005 — Invalid Dropdown Value
Meaning: The CSV contains a value that does not match an available dropdown option.
Fix: Match the saved dropdown option exactly, including spelling and case.
Error 1006 — Invalid Contact ID
Meaning: The Contact ID does not match a valid contact for the sub-account.
Fix: Export contacts to confirm the correct IDs, or disable updating by Contact ID when that identifier is not being used.
Error 1008 — Invalid Email Format
Meaning: One or more email values are incorrectly formatted.
Fix: Use a valid structure such as [email protected] and remove unnecessary spaces.
Errors 1010–1012 — Duplicate Primary Value or Contact ID
Meaning: A unique identifier such as email, phone, or Contact ID is duplicated.
Fix: Remove duplicate values from the CSV and use one unique identifier per row.
Error 1013 — Phone Format Error
Meaning: The phone number does not use an accepted format.
Fix: Use E.164 formatting such as +11234567890 or another valid regional format. Avoid letters or extensions inside the phone-number field.
Error 1014 — Date Format Error
Meaning: Date values are not using an accepted or consistent format.
Fix: Convert the entire date column to a consistent supported format such as YYYY-MM-DD or MM/DD/YYYY.
Error 1015 — Owner Not Found
Meaning: The imported Owner value cannot be matched to a user.
Fix: Use the exact user email address when possible, or the exact user name that exists in the sub-account.

Accepted CSV Formats

Phone

E.164 is recommended, such as +11234567890. The original guide also notes that common US phone formats may work.

Date

Use one consistent format throughout the column, such as YYYY-MM-DD.

Tags and Multi-Select

Separate multiple values with commas or semicolons, such as Tag1, Tag2.

Dropdown Fields

Single-option values must match the saved dropdown option exactly.

Owner

Use the user's email address when possible to reduce conflicts between users with similar names.

Do Not Disturb

The original guide states that DND values commonly accept True/False or Yes/No.

Tips for a Successful Import

Use One Header Row
Reason: A clean CSV should contain a single header row without extra worksheet tabs.
Remove Blank or Incomplete Rows
Reason: Rows missing required identifiers such as email or phone can fail depending on the type of import.
Keep Unique Fields Unique
Reason: Duplicate email, phone, or Contact ID values can produce import conflicts.
Export Before Updating Contacts
Reason: An export can help confirm current Contact IDs and field names before you update existing records.
Standardize Formatting Before Upload
Reason: Consistent date, phone, owner, and dropdown values reduce avoidable import errors.

Fix the file before retrying

Correct the CSV based on the error log before starting another import instead of repeatedly submitting the same broken file.

Timezone and Country Values

BizStackPro supports a range of standard timezone values. The original guide gives examples such as America/New_York, US/Pacific, Europe/London, and Asia/Tokyo.

The original guide also states that most countries are supported and that two-letter country codes such as US, CA, IN, and AU are commonly accepted when a country value is required.

Frequently Asked Questions

Where can I see error logs for a failed import?
Go to Contacts → Bulk Actions, click Show Stats next to the failed import, and then open the Error tab.
How can I fix "Invalid Contact ID" errors?
Make sure the ID matches a real contact in the same sub-account, or disable updating with Contact ID when that identifier is not appropriate for the import.
What if I see duplicate errors in the CSV file?
Check that unique fields such as email, phone, or Contact ID do not repeat in the file. Correct the duplicates and re-import the cleaned CSV.
How should I format phone numbers for import?
Use E.164 formatting when possible, such as +11234567890. The original guide also states that common US formats can be accepted.

Continue Learning

Continue learning how to prepare contact data and manage imports with these related Help Center guides.

Recommended Next Step

Review the Full CSV Import and Export Process

Once you know how to diagnose failed rows and correct common CSV errors, continue with the complete import and export guide to review file preparation, field mapping, updating contacts, and exporting contact data.

Keep Contact Imports Organized with BizStackPro

BizStackPro brings contact management, CSV imports, Bulk Actions, duplicate controls, tags, and other CRM tools together so contact data can be managed from one connected platform.

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