---
title: "Set PDF Form Fields Dynamically"
slug: "set-pdf-form-fields-dynamic"
updated: 2023-01-12T15:43:36Z
published: 2023-01-12T15:43:36Z
canonical: "documentation.decisions.com/set-pdf-form-fields-dynamic"
---

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

# Set PDF Form Fields Dynamic

| ## Step Details |
| --- |
| **Introduced in Version** | 4.0.0 |
| **Last Modified in Version** | 7.12.0 |
| **Location** | Data > PDF |

The Set PDF Form Fields Dynamic step passes in a list of DataPairs where the Name is the Field Name, and the Value is an Object and updates a PDF FileData with those values.

---

## Properties

#### Inputs

| Property | Description | Data Type |
| --- | --- | --- |
| Field Data | Names and Values of the Fields to set within the PDF file. | List of DataPair |
| PDF File | File to set PDF fields on. | FileData |

#### Outputs

| Property | Description | Data Type |
| --- | --- | --- |
| PDF File | File using the newly set PDF fields. | FileData |

## Example Inputs and Outputs

| Field Data | PDF File | Output |
| --- | --- | --- |
| List of Data Pair | A PDF File | Successful PDF Output |
| Null | A PDF File | EXCEPTION MESSAGE |
| List of Data Pair | Null | EXCEPTION MESSAGE |
| Empty List of Data Pair | A PDF File | Successful PDF Output |
| List of Data Pair | CSV File or Excel File, or any file type other than PDF | EXCEPTION MESSAGE |

![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/2023-01-11_14h52_42.png)

---

## Common Errors

### Field Data cannot be null

The Field Data property must have Input Data, or the step will fail with the following Exception Message.

```csharp
Exception Stack Trace: DecisionsFramework.Design.Flow.ErrorRunningFlowStep: Error running step Set PDF Form Fields Dynamic 1[SetPDFFormFieldsDynamic] in flow [Display Steps]: Field Data cannot be null.
 ---> DecisionsFramework.LoggedException: Field Data cannot be null.
   at DecisionsFramework.Design.Flow.CoreSteps.SetPDFFormFieldsDynamic.Run(StepStartData data
 at DecisionsFramework.Design.Flow.FlowStep.RunStepInternal(String flowTrackingID, String stepTrackingID, KeyValuePairDataStructure[] stepRunDataValues, AbstractFlowTrackingData trackingData
 at DecisionsFramework.Design.Flow.FlowStep.Start(String flowTrackingID, String stepTrackingID, FlowStateData data, AbstractFlowTrackingData trackingData, RunningStepData currentStepData) --- End of inner exception stack trace
```

### PDF File cannot be null

The PDF File property must have Input Data, or the step will fail with the following Exception Message.

```csharp
Exception Stack Trace: DecisionsFramework.Design.Flow.ErrorRunningFlowStep: Error running step Set PDF Form Fields Dynamic 1[SetPDFFormFieldsDynamic] in flow [Display Steps]: PDF File cannot be null.
 ---> DecisionsFramework.LoggedException: PDF File cannot be null.
   at DecisionsFramework.Design.Flow.CoreSteps.SetPDFFormFieldsDynamic.Run(StepStartData data
 at DecisionsFramework.Design.Flow.FlowStep.RunStepInternal(String flowTrackingID, String stepTrackingID, KeyValuePairDataStructure[] stepRunDataValues, AbstractFlowTrackingData trackingData
 at DecisionsFramework.Design.Flow.FlowStep.Start(String flowTrackingID, String stepTrackingID, FlowStateData data, AbstractFlowTrackingData trackingData, RunningStepData currentStepData)
   --- End of inner exception stack trace ---
```

### Incorrect File Header

This step requires a PDF file; if any other file type is used as the PDF File input, the following error will occur.

To correct this, use a PDF file.

```csharp
Exception Stack Trace: DecisionsFramework.Design.Flow.ErrorRunningFlowStep: Error running step Set PDF Form Fields Dynamic 1[SetPDFFormFieldsDynamic] in flow [Display Steps]: Incorrect file header ---> Aspose.Pdf.InvalidPdfFileFormatException: Incorrect file header
   at #=zrx8$vGff8rw0zOsJfXBx6dl$eHVthdMYUw==.#=zELiBKk0nn$NI()
   at #=zrx8$vGff8rw0zOsJfXBx6dl$eHVthdMYUw==..ctor(Stream #=zA6ZEq1c=, String #=zkZxG5Dc=, Boolean #=zFRe3SoGTg5hA)
   at Aspose.Pdf.Document.#=zyoo3pL0=(Stream #=z3RtBOxU=, String #=zkZxG5Dc=)
   at Aspose.Pdf.Document..ctor(Stream input)
   at DecisionsFramework.Utilities.Data.PDFUtility.GetPdfDocument(Stream stream)
   at DecisionsFramework.Utilities.Data.PDFUtility.GetFieldNames(FileData file, PdfFieldNameSortingMethod sortingMethod)
   at DecisionsFramework.Design.Flow.CoreSteps.SetPDFFormFieldsDynamic.Run(StepStartData data)
   at DecisionsFramework.Design.Flow.FlowStep.RunStepInternal(String flowTrackingID, String stepTrackingID, KeyValuePairDataStructure[] stepRunDataValues, AbstractFlowTrackingData trackingData)
   at DecisionsFramework.Design.Flow.FlowStep.Start(String flowTrackingID, String stepTrackingID, FlowStateData data, AbstractFlowTrackingData trackingData, RunningStepData currentStepData) 
   --- End of inner exception stack trace ---
```