Code ISRC - ISWC &CO

Hello, here are my questions:

To place classical music with an aggregator, it seems that Apple imposes its rules on all distributors.

Expl: Nocturne 1 must be written

Nocturne+space+N+letter o+dot+space+1

which gives: Nocturne No. 1

-At the sacem, no dot and all capital letters: NOCTURNE NO 1

-At the SCPP: NOCTURNE NO. 1

As you will have understood, it is not surprising that there are blockages for rights holders.

Expl 2: Sonata xy

ISRC Guide: A.14.1 Compound Records

"Metadata records created by the Registrant for the separate parts should indicate, at least in their own records and preferably in external repertory databases, the ISRC of the composite record from which they were extracted. "

Entire symphony:
XYZ Orchestra - Beethoven: Symphony No. 2 in D major
ISRC AA-6Q7-20-00055

Individual movements:
XYZ Orchestra - Beethoven: Symphony No. 2 in D major: I. Adagio molto - Allegro con brio (Which has its individual ISRC code)

XYZ Orchestra - Beethoven: Symphony No. 2 in D major: II. Larghetto (which has its individual ISRC code)

XYZ Orchestra - Beethoven: Symphony No. 2 in D major: III. Scherzo. Allegro – Trio (Which has its individual ISRC code)

XYZ Orchestra - Beethoven: Symphony No. 2 in D major: IV. Allegro molto (Which has its individual ISRC code)

So each individual part must have its ISRC code and refer to the reference ISRC code, namely the code of the entire part.

But now, among aggregators, there is only one location provided for the isrc code…

To see more clearly:

In view of all this, in your opinion, is it wise to write NOCTURNE A (b, c …) for consistency between the aggregators, sacem and Scpp?

And concerning the different parts of a composed piece, is it possible and wise to enter the reference ISRC and ISWC in “Copyright” or “description”? (knowing that the aggregator can delete it… )

Last question: at the sacem, do you submit a composite piece by adding the name of each part in the subtitle or do you submit a deposit of the entire piece and a deposit of each separate part with the general title and the name in the subtitle of this part alone?

Regarding all these questions, how do you do it please and do you have any reference works on the subject?

Thank you so much

Thierry