PDF-based form doubt

Hi,

I'm new at SFP transaction.

I need to send from ABAP program to interface lot of fields like: p0002-vornr, p0002-nachn, p0002-perid, p0006-stras, p0006-pstlz, p0006-ort01, p0001-kostl, p0001-pernr, t591s-text, t001-stceg and more.

My doubt is what is better, create one structure with all these fields or send this like field(alone)?

If have another better soluction is also welcome.

Thank you by your help.

Ana