PF: What is the appropriate title a prospective candidate should use when saving the Part B1 and Part B2 files for upload to the platform?

Applicants can name their part B1 and B2 as follows:

Proposal Number-Acronym-Part B1.pdf / Proposal Number-Acronym-Part B2.pdf. This does not affect the evaluation process. 

Proposal number - before the call deadline the proposal is assigned a temporary SEP number. At call deadline all proposals receive their final proposal number. Therefore, applicants can use the SEP number to name their files.