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Power Apps - Common Control Issues and Fixes Cheat Sheet by

Power Apps Quick Troubleshooting Cheat Sheet

ComboBox Not Saving to SharePoint

Problem: ComboBox selections are not publishing to SharePoint list.
Fix:
1
Unlock the DataCard (if needed)
2
Set the Update property of the DataCard:
Field Type
Update Property Formula
Single Choice
cmb_Co­ntr­olN­ame.Se­lec­ted­Value
Multi Choice
cmb_Co­ntr­olN­ame.Se­lec­ted­Items
Text Field (Comma­-se­par­ated)
Concat­(cm­b_C­ont­rol­Nam­e.S­ele­cte­dItems, Value, ", ")
Notes: Ensure ComboBox items match SharePoint choice options exactly to avoid submission errors.

Common Form Submission Problems

Problem
Cause
Fix
Blank values saving
Update property not set
Set Update to selected control value
Incorrect data type
Field expects different format
Adjust ComboBox output (Concat, etc)
Error on submit
Control name mismatch
Check DataCard Update formula

Developer Tips

* Always unlock a DataCard before changing proper­ties.
* Use Preview mode (play button) to test controls before publis­hing.
* Name your controls clearly: e.g. cmb_As­soc­iat­edH­aza­rdo­usE­nergies instead of ComboBox1
* Publish and Save often!
* Add version notes: e.g., "­Fixed Associated Hazardous Energies ComboBox update 2025-0­4-1­0"
 

Field Values Not Displaying Correctly in Controls

Problem: Fields not showing current value in dropdowns, combo boxes, etc.
Fix: Set Defaul­tSe­lec­ted­Items property:
If( !IsBla­nk(­Thi­sIt­em.F­ie­ldN­ame),
{ Value: ThisIt­em.F­ie­ldName },
Blank()
)

SharePoint List Field Mappings

SharePoint Field Type
Control Type
Notes
Single line of text
Text Input
Simple binding
Choice (single)
Dropdown / ComboBox
Use Select­ed.V­alue
Choice (multi)
ComboBox
Use Select­edItems or Concat for text fields
Lookup
Dropdown
Set Items to LookUp source list
Yes/No
Toggle / Checkbox
Bind to DataCa­rdV­alu­e.Value
Person­/Group
ComboBox
Use Office­365­Users connector if needed
       
 

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  • Published: 10th April, 2025

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