# Error from NDC module.

**URL:** <https://forums.unrealengine.com/t/error-from-ndc-module/2638848>\
**Category:** FX\
**Tags:** error, particle-systems, unreal-engine, question\
**Created:** [August 12, 2025, 7:45am UTC](https://forums.unrealengine.com/t/error-from-ndc-module/2638848 "2025-08-12T07:45:30Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Extrahdmi](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Extrahdmi](https://forums.unrealengine.com/u/Extrahdmi)\
**Post date:** [August 12, 2025, 7:45am UTC](https://forums.unrealengine.com/t/error-from-ndc-module/2638848/1 "2025-08-12T07:45:30Z")

</div>

When I tried to use NDC in Niagara, I got this error and it didn’t work.

```auto
/Engine/Generated/NiagaraEmitterInstance.ush:1439:122: Err0r: expected parameter declarator
	void Read_Emitter_NDC_ImpactASC12398ASC35501ASC12415ASC21462ASC12426_DataChannel(int ElementIndex, out bool bOutSuccess, )
	                                                                                                                         ^ impact, Particle GPU Compute Script, 
/Engine/Generated/NiagaraEmitterInstance.ush:1108:76: Err0r: expected parameter declarator
	void Read_Emitter_SpawnDataChannel(int ElementIndex, out bool bOutSuccess, )
	                                                                           ^ impact, Particle GPU Compute Script, 

```

Does anyone know about these errors?