3360251 - Flow Builder 1.0: Error "Package or change request/task is invalid (FCLM110)" during loading class regeneration

• While regenerating loading class for Flow Builder in the development system, the error message "Package or change request/task is invalid" appears. 
• Message no. FCLM110. 

"Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental." 

• SAP S/4HANA 1610, 1709, 1809, 1909, 2020, 2021 (Flow builder 1.0)

FCLM110, generate loading class, assign loading class, ZCL_FCLM_BSEGFLOW_SAMPLE, ZCL_FCLM_MMFLOW_SAMPLE, invalid package, invalid change request/task, FCLM116, transport request error, loading class regeneration, package creation, SE80, SE24, object directory, transport request release, Flow Builder error. , KBA , FIN-FSCM-FQM , One Exposure , FIN-FSCM-CLM , SAP Cash Management , Problem