procedimiento abreviado. summary trial.
In order for a summary trial to go forth, there must be an agreement between the defendant and the prosecutor whereby the former specifically accepts the allegations in the accusatory instrument, while the latter requests the trial judge a sentence that is no higher than nine years of prison (Art. 757, LECr.). If the court accepts to hold a summary trial, which is limited to presenting the case in chief without opposition from the defense, it must not impose a sentence higher than the one sought by the prosecutor.

ROLLO DE APELACIÓN (RP) Nº 112/2018
https://www.poderjudicial.es/search/contenidos.action?action...

Así por esta nuestra Sentencia, de la que se unirá certificación al rollo de su razón, lo pronunciamos, mandamos y firmamos.
El rollo es el conjunto de actuaciones de un procedimiento judicial. La razón hace referencia, simplemente, al lugar en que han de ser archivadas. La rimbombante frase que recoges equivale a un simple y claro «Archívense», referido tanto a la sentencia como al resto de documentos generados por la demanda.
https://cvc.cervantes.es/foros/leer_asunto1.asp?vCodigo=3706...

In consideration of the above, I believe RP is Appellate File or Appeals File, Appeals Court File or just File if appeals is contextually redundant.