2740788 - Syntax error in program SAPLAGS_CUSTOM_CODE_EFWK

Implementation of SAP Note 2548663 - Improvement of Reference Data Handling in CCLM Collectors results into the following syntax error:

Function Module AGS_CC_REF_POSTDATALOADER
  Type "AGSCCL_REF_HEAD" is unknown.

Additionaly a dump is seen in ST22:

Category ABAP Programming Error
Runtime Errors SYNTAX_ERROR
ABAP Program SAPLAGS_CUSTOM_CODE_EFWK
Application Component SV-SMG-CCM-CDM

Short Text
    Syntax error in program "SAPLAGS_CUSTOM_CODE_EFWK ".

What happened?
    Error in the ABAP Application Program

    The current ABAP program "SAPMSSY1" had to be terminated because it has
    come across a statement that unfortunately cannot be executed.
    In include "LAGS_CUSTOM_CODE_EFWKU16 ", in line 56 of program
    "SAPLAGS_CUSTOM_CODE_EFWK ", the following syntax errors
    have occurred:
    Type "AGSCCL_REF_HEAD" is unknown

 Solution Manager 7.2 SP03-SP05

syntax error, SAPLAGS_CUSTOM_CODE_EFWK, AGSCCL_REF_HEAD, 2548663 , KBA , SV-SMG-CCM , Custom Code Management , Problem