Bitmap Length about iso_8583

[spyndutz]

The expected active bit should be:
11110010 00111010 01000000 00000001 00001000 11100001 10000000 00001110
Therefore, the given bitmap defines the following fields present in the message:
1, 2, 3, 4, 7, 11, 12, 13, 15, 18, 32, 37, 41, 42, 43, 48, 49, 61, 62, 63

[zemuldo]

F23A400108E1800E is your primary bitmap? If it has the secondary bitmap then it is usually encoded next after primary bitmap. I dont know if this is the case for you.

If yes, its binary form is 1111001000111010010000000000000100001000111000011000000000001110 and the first bit there is 1 indicating secondary bitmap is present.

I have also noticed that the override was not working. So setting {secondaryBitmap: false} in message decoder was not working. So you have two options.

I have made modifications in the beta release here. If this works for you I can create a PR.
Set the bitmap encoding and presence of secondary bitmap as below or use custom format for field 1 with an as the encoding

const isopack = new Main();
  const isoString = '0200c000000000000000194761739001010119';
  const config = { lenHeader: false, bitmapEncoding: 'utf8', secondaryBitmap: false, };
  const message = isopack.getIsoJSON(new Buffer.alloc(isoString.length, isoString), config);

  t.is(message[0], '0200');
  t.is(message[2], '4761739001010119');

  const isopack1 = new Main(message);
  isopack1.setBitMapEncoding('utf8');
  isopack1.setSecondaryBitmap(false);
  const messageBuf1 = isopack1.getBufferMessage();
  const message1 = isopack.getIsoJSON(messageBuf1, {...config, lenHeader: true});

  t.is(message1[0], '0200');
  t.is(message[2], '4761739001010119');

[spyndutz]

I don't know whether I have explained my problem clearly there.
However, by adding these config (Which set bitmapEncoding to utf8)

const config = { lenHeader: false, bitmapEncoding: 'utf8' }

It fixed my current issues. And this issue already handled with the current release of the packages
I guess we just need better documentation of the available configuration.
Thanks for responding to my issue!

[zemuldo]

Nice! You can update the docs and PR 😄