---
title: Error when parsing template script (Business Rule)
description: This error appears when a template fails while the generator writes the code of a model object.
---

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# Error when parsing template script (Business Rule)

**Applies to**  
Platform: Microsoft SQL Server · Snowflake · Snowflake dbt · Databricks · Databricks dbt · Fabric Lakehouse · Fabric Warehouse · Oracle

This error appears when a template fails while the generator writes the code of a model object. The client then does not offer the artifacts for download, because they are incomplete. After the cause is removed, the next generation can be downloaded.

### Message

Error ID-90001, short text `Model object has error when parsing template script.`, details:

```
Model object '<model object name>' of type '<model object type>'
has error when parsing template script on part <part>:
<exception message>
```

Available since Generator 2.4.

### Cause

The template code threw an exception for the named part of the model object:

- A custom template of your project: the exception message points to the line or value in your template code.
- A template delivered with the generator: a combination of settings of the model object is not handled by the template.

### Fix

1. For a custom template, correct the template and generate again.
2. For a delivered template, check the settings of the named model object against its reference article, change the setting that the exception refers to, and generate again.
3. When the error stays, contact biGENIUS support with the full message text.

### Check the result

Generation completes without the error, and the artifacts can be downloaded.

### Example

Seven Mart Dimensions of a Data Mart project fail in the template `MartDimensionDeltaView` with `System.InvalidOperationException`, once for the delta view of each Mart Dimension, for example `DM_MD_scd_mixed_Delta`. In the client, this generation offers no download.

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- See also: [Troubleshoot generation, deployment and load failures](https://knowledge.bigenius-x.com/troubleshoot-generation-deployment-and-load-failures?hsLang=en), [Understand warnings and errors](https://knowledge.bigenius-x.com/understand-warnings-and-errors?hsLang=en), [Generate artifacts](https://knowledge.bigenius-x.com/generate-artifacts?hsLang=en)

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