1523941 - RESOURCE_NOT_FOUND, NO_MAPPINGPROGRAM_FOUND & ResourceNotFoundException errors in SAP PI/PO

You see messages either in transaction SXMB_MONI or Message Monitor in error state with mapping related errors. Below are examples of the type of errors you will see: 

• SXMB_MONI 
  <SAP:Code area="MAPPING">NO_MAPPINGPROGRAM_FOUND</SAP:Code>............<SAP:Stack>Mapping program is not available in runtime cache: Object ID 25916E9G2Y763E9A80F38Q493ED442L8 Software Component 521104807E1011NVW6B8D0JIA0A827P9</SAP:Stack>
  OR
  <SAP:Code area="MAPPING">RESOURCE_NOT_FOUND</SAP:Code>.............<SAP:Stack>Unable to find resource 30bf6412-0r72-45ua-bc8a-2997c502bd in the following software component versions: 521104807E1011NVW6B8D0JIA0A827P9</SAP:Stack>
• Message Monitor
  Mapping "<Mapping Name>" failed to execute: MappingException: Mapping failed in runtimeUnable to find resource com/sap/xi/tf/_Mapping Name_.class in the following software component versions: XXX, ResourceNotFoundException: Unable to find resource com/sap/xi/tf/_Mapping Name_.class in the following software component versions: XXX
  OR
  Transmitting the message to endpoint <local> using connection REST_http://sap.com/xi/XI/System failed, due to: com.sap.aii.af.service.mapping.MappingException: Mapping failed in runtimeUnable to find resource com/sap/xi/tf/_Mapping Name_.class in the following software component versions: XXX

• SAP NetWeaver
• SAP Process Integration

Process Integration 7.0, PI 7.0, PI 7.01, PI 7.02, Process Integration 7.10, PI 7.10, Process Integration 7.11, PI 7.11, Process Integration 7.30, PI 7.30, Process Integration 7.31, PI 7.31, Process Orchestration 7.4, PI 7.4, PO 7.4, Process Orchestration 7.5, PI 7.5, PO 7.5, NetWeaver, XI, ResourceNotFoundException, Migrate, Upgrade, CMS, CTS+, File system transport, Cache refresh, GUID, Message mapping, Unable to find resource, com.sap.aii.af.service.mapping.MappingException, in the following software component versions, Mapping failed in runtime Unable to find resource , KBA , BC-XI-IBD-MAP , Integration Builder Design - Mapping , BC-XI-IBC-MAP , Mapping , BC-XI-IS-MAP , Please use BC-XI-IS , Problem