4-Prefix Messages: LIOCS, TELECOM., DEBUG. AIDS, AND ESTV

41xx=Tape handling messages

4110A4111A4112A4113D4114A4115A4116A4117D
4118D4119A4120I4121A4122I4123D4124I4125D
4126I4127A4130A4131D4132D4133D4151I4170A
4171A4172A4183I4184D4185I4186I

4nxx=Access Methods messages

4n00I4n01I4n02I4n03I4n04I4n06I4n08D4n09I
4n10I4n11I4n12I4n13I4n14I4n15I4n16I4n17I
4n20I4n21A4n22I4n23I4n24I4n25I4n26I4n29D
4n30D4n31D4n33A4n34I4n35I4n36I4n37I4n38D
4n39D4n41A/I4n42A4n43I4n44A4n45I4n46I4n47A
4n48I4n49I4n50A4n51I4n52I4n54I4n55A4n56A
4n58I4n59A/I4n60I4n61I4n62I4n63I4n64I4n65I
4n66A4n69I4n70I4n71I4n72I4n77A4n80I4n81I
4n83I4n84D4n85I4n86D4n87I4n88I4n90I4n91I
4n97I4n98I4n99D

4Bxx=BTAM MESSAGES

4B00I4B01I4B02I4B03I4B04I4B05I4B06I4B07I
4B08I4B09I4B10I4B20I4B21I4B22I4B23I4B24I
4B25I4B26I4B27I4B28I4B29I4B30I4B31I4B32I
4B33I4B34I4B35I4B36I4B37I4B38I4B39I4B40I
4B41I4B42I4B43I4B44I4B50I4B60I4B70I4B71I
4B72I4B98I4B99I

4Cxx=PDAIDS, SDAIDS messages

4C10D4C11D4C12D4C13D4C14D4C15D4C16D4C17D
4C18I4C19I4C20D4C21A4C22A4C23D4C24A4C26I
4C27D4C28D4C42A4C43A4C44A4C46A4C50E4C51D
4C52E4C53I4C54I4C55D4C56E4C57E4C58D4C59D
4C60D4C61D4C62D4C63D4C64D4C65D4C66D4C67D
4C68D4C69D4C70E4C71I

4Exx=ESTV support messages

4E10I

4Mxx=MICR/OCR messages

4MR1I4MR2I

4Pxx=DATA CHECK messages

4P01I4P02D

4Qxx=QTAM messages

4Q00I4Q01I4Q02I4Q03I4Q04I4Q16I4Q17I4Q18I
4Q19I4Q20I4Q21I4Q22I4Q23I4Q24I4Q25I4Q26I
4Q27I4Q28I4Q29I4Q30I4Q31I4Q32I4Q33I4Q34I
4035I4Q35I4Q37I4Q38I4Q39I4Q40I4Q41I4Q41I
4Q42I4042I4Q47I4Q50I4Q53I

4Vxx=VTOC DSPLY/DUMP messages

4V04I4V06I4V09I4V95A4V96A