This code system http://hl7.org/fhir/CodeSystem/transport-code defines the following codes:

Code Display Definition
approve Activate/approve the focal resource Take what actions are needed to transition the focus resource from 'draft' to 'active' or 'in-progress', as appropriate for the resource type. This may involve additing additional content, approval, validation, etc.
fulfill Fulfill the focal request Act to perform the actions described in the focus request. This might result in a 'more assertive' request (order for a plan or proposal, filler order for a placer order), but is intend to eventually result in events. The degree of fulfillment requested might be limited by Task.restriction.
instantiate Instantiate the focal definition Act to perform the actions defined in the focus definition resource (ActivityDefinition, PlanDefinition, Questionnaire, etc.) For PlanDefinition or ActivityDefinition, this might result in a 'more assertive' request (order for a plan or proposal, filler order for a placer order), but is intend to eventually result in events. For Questionnaire, this would result in a QuestionnaireResponse - and possibly resources constructed using data extracted from the response. The degree of fulfillment requested might be limited by Task.restriction.
abort Mark the focal resource as no longer active Abort, cancel or withdraw the focal resource, as appropriate for the type of resource.
replace Replace the focal resource with the input resource Replace the focal resource with the specified input resource
change Change the focal resource Update the focal resource of the owning system to reflect the content specified as the Task.focus
suspend Suspend the focal resource Transition the focal resource from 'active' or 'in-progress' to 'suspended'
resume Re-activate the focal resource Transition the focal resource from 'suspended' to 'active' or 'in-progress' as appropriate for the resource type.
<status value="active"/> <experimental value="false"/> <publisher value="HL7 International"/> <description value="Codes indicating the type of action that is expected to be performed"/> <jurisdiction> <coding> <system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/> <code value="001"/> <display value="World"/> </coding> </jurisdiction> <caseSensitive value="true"/> <valueSet value="http://hl7.org/fhir/ValueSet/transport-code.html"/> <content value="complete"/> <concept> <code value="approve"/> <display value="Activate/approve the focal resource"/> <definition value="Take what actions are needed to transition the focus resource from 'draft' to 'active' or 'in-progress', as appropriate for the resource type. This may involve additing additional content, approval, validation, etc."/> </concept> <concept> <code value="fulfill"/> <display value="Fulfill the focal request"/> <definition value="Act to perform the actions described in the focus request. This might result in a 'more assertive' request (order for a plan or proposal, filler order for a placer order), but is intend to eventually result in events. The degree of fulfillment requested might be limited by Task.restriction."/> </concept> <concept> <code value="instantiate"/> <display value="Instantiate the focal definition"/> <definition value="Act to perform the actions defined in the focus definition resource (ActivityDefinition, PlanDefinition, Questionnaire, etc.) For PlanDefinition or ActivityDefinition, this might result in a 'more assertive' request (order for a plan or proposal, filler order for a placer order), but is intend to eventually result in events. For Questionnaire, this would result in a QuestionnaireResponse - and possibly resources constructed using data extracted from the response. The degree of fulfillment requested might be limited by Task.restriction."/> </concept> <concept> <code value="abort"/> <display value="Mark the focal resource as no longer active"/> <definition value="Abort, cancel or withdraw the focal resource, as appropriate for the type of resource."/> </concept> <concept> <code value="replace"/> <display value="Replace the focal resource with the input resource"/> <definition value="Replace the focal resource with the specified input resource"/> </concept> <concept> <code value="change"/> <display value="Change the focal resource"/> <definition value="Update the focal resource of the owning system to reflect the content specified as the Task.focus"/> </concept> <concept> <code value="suspend"/> <display value="Suspend the focal resource"/> <definition value="Transition the focal resource from 'active' or 'in-progress' to 'suspended'"/> </concept> <concept> <code value="resume"/> <display value="Re-activate the focal resource"/> <definition value="Transition the focal resource from 'suspended' to 'active' or 'in-progress' as appropriate for the resource type."/> </concept> </CodeSystem>