---
title: "Error Message: 'Query Filter Cannot Be Specified on a Query...'"
slug: "error-message-query-filter-cannot-be-specified"
description: "Users may get the following error: 'Query filter cannot be specified on a query that are split into multiple queries dues to 1:n fetch mode.'"
updated: 2026-02-12T10:25:51Z
published: 2026-02-12T10:25:51Z
canonical: "kb.lasernetgroup.com/error-message-query-filter-cannot-be-specified"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://kb.lasernetgroup.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Error Message: 'Query Filter Cannot Be Specified on a Query that Are Split into Multiple Queries Dues to 1:n Fetch Model'

When running a report, the following error may occur:

> [!CAUTION]
> Error
> 
> Query filter cannot be specified on a query that are split into multiple queries dues to 1:n fetch mode.

This error message is also shown in Lasernet FO Connector 6 when configuring a query (within the **Query** group > **Dialog setup** > **Default ranges** and in **Form links** > **Dialog setup** > **Default ranges**).

It is similar to the following error message:

> [!CAUTION]
> Error
> 
> 1:N Fetch Mode is not allowed on Datasource having join condition with node other than its immediate parent.

The error occurs when adding a filter in the Query Wizard, Dialog Setup and/or the Default Ranges. The issue only occurs if the query contains two or more data source structures with at least one **Fetch Mode**/**Fetch** set to **1:N** (One2Many).

The following is an example containing two data-source-structures:

A. Containing the data sources/tables **CustTable** and **SalesTable**.

B. Containing the data sources/tables **CustTable**, **DlvTerm**, and **LanguageTxt**.

Data source structure A:

![](https://cdn.document360.io/c831ef63-c6b3-48ee-b443-3e33644e4e2e/Images/Documentation/1622718123948.png)

Data source structure B:

![](https://cdn.document360.io/c831ef63-c6b3-48ee-b443-3e33644e4e2e/Images/Documentation/1622725485180.png)

Adding a filter in Lasernet FO Connector 6 would display the following error message:

> [!CAUTION]
> Error
> 
> Query filter cannot be specified on a query that is split into multiple queries dues to 1:n fetch mode.

![](https://cdn.document360.io/c831ef63-c6b3-48ee-b443-3e33644e4e2e/Images/Documentation/1622725784652.png)

A similar error is shown in Lasernet FO Connector 5 when running the report.

## Solution

There are three ways to resolve the issue, as follows:

### Change the Query Structure

Restructure the query. It should be possible to have all the required data sources within the same data source structure as follows:

![](https://cdn.document360.io/c831ef63-c6b3-48ee-b443-3e33644e4e2e/Images/Documentation/1622726657017.png)

Having all data sources in the same structure would not cause the error when using **1:N** in the **Fetch Mode**/**Mode**.

This approach also avoids the issue in relation to the row size when having a lot of data sources/tables (issue caused by **1:1**).

### Change 1:N to 1:1

Change **1:N** to **1:1** in the **Fetch Mode**/**Fetch**, but this could cause the following error if many tables are joined together:

> [!CAUTION]
> Error
> 
> [Microsoft][ODBC Driver 17 for SQL Server][SQL Server]Cannot create a row of size 8061 which is greater than the allowable maximum row size of 8060.

This error is only displayed if the query contains a lot of data sources/tables, and why **Fetch Mode**/**Fetch 1:1** works in most cases.

### Add a Range instead of a Filter (Lasernet FO Connector 6)

Lasernet FO Connector 6 contains the option to add a range instead of a filter by clearing the **Filter** checkbox in the **Ranges** in Dialog Setup, **Ranges** in the Form Links, and/or in the **Ranges** in the Query Wizard.

Clearing the **Filter** checkbox will fix the issue and enable multiple query structures with **1:N** relationships in the **Fetch Mode**/**Fetch**.

![](https://cdn.document360.io/c831ef63-c6b3-48ee-b443-3e33644e4e2e/Images/Documentation/1622727111018.png)