Consider the deployment of solution per web application and not globally
Do not deploy prohibited assemblies
Do not deploy thumbs.db
Do not reset webserver
Define mode 'Recycle' for Solution upgrade
Do not deploy files directly into system folder
Do not deploy batch files (.bat)
Do not deploy PowerShell scripts (.ps1)
Do not deploy setups (.msi)
Deploy Assembly which must run in full trust to GAC
Avoid deployment of Assembly to GAC if it is not necessary
Do not deploy assembly with DEBUG mode
Do not deploy SharePoint assemblies
Do not deploy assembly multiple times
Do not deploy empty Assemblies
Do not deploy SPWebConfigModifications via features
Do not deploy RootFile to TEMPLATE folder
Do not deploy RootFile multiple times
Do not deploy Images to LAYOUTS folder
Deploy only Images to IMAGES folder
Deploy binary files (like Assemblies) to ClientBin folder
Do not deploy TemplateFile multiple times
Do not deploy files of a Feature as TemplateFile
Do not deploy Features ElementFiles as Resources
Deploy missing image for Feature
Deploy missing ElementManifest or ElementFile in Feature
Do not deploy feature with same folder name multiple times
Do not deploy feature with same ID name multiple times
Do not deploy empty ElementManifests in Features
Do not deploy SharePoint assemblies as ElementFile
Do not deploy Webservice (.asmx) to LAYOUTS folder
Do not deploy Administration Webservice (.asmx) to ADMIN folder
Do not deploy a WCF Webservice (.svc) to LAYOUTS folder
Do not deploy a WCF Administration Webservice (.svc) to ADMIN folder
Deploy missing image for WebTemplate
Expand Minimize

Do not deploy a WCF Webservice (.svc) to LAYOUTS folder

A WCF Webservice (.svc) should not be deployed to '\TEMPLATE\LAYOUTS\' folder (url: '../_layouts/..'). It should be deployed to '\ISAPI\' instead (url '../vti_bin/..').

CheckId SPC067601
TypeName DoNotDeployWCFWebServiceToLAYOUTS
Severity Error
Type TemplateFile
Resolution

Move the svc file to '\ISAPI\' folder.

See also
Message Suppression
Disclaimer: The views and opinions expressed in this documentation and in SPCAF do not necessarily reflect the opinions and recommendations of Microsoft or any member of Microsoft. SPCAF and RENCORE are registered trademarks of Rencore. All other trademarks, service marks, collective marks, copyrights, registered names, and marks used or cited by this documentation are the property of their respective owners.