https://userapps.support.sap.com/sap/support/knowledge/en/3423466
3423466 - SAPLSAUS - CL_UPG_UPGPARAM_HANDLER is unknown error | SAP Knowledge Base Article
After an upgrade, there is a syntax error with SAPLSAUS: In include "LSAUSF01 ", in line 100 of program "SAPLSAUS ", the following syntax errors have occurred:...