License should be either proprietary or one listed on the SPDX page.

Nocompliant Code Example

{
  ...
  "license": blabla
  ...
}

Compliant Solution

{
  ...
  "license": "proprietary"
  ...
}

{
  ...
  "license": "LGPL-3.0"
  ...
}

See

List of Licenses

GlideAbstylesAFL-1.1
AFL-1.2AFL-2.0AFL-2.1
AFL-3.0AMPASAPL-1.0
Adobe-GlyphAPAFMLAdobe-2006
AGPL-1.0AfmparseAladdin
ADSLAMDPLPAANTLR-PD
Apache-1.0Apache-1.1Apache-2.0
AMLAPSL-1.0APSL-1.1
APSL-1.2APSL-2.0Artistic-1.0
Artistic-1.0-PerlArtistic-1.0-cl8Artistic-2.0
AALBahyphBarr
BeerwareBitTorrent-1.0BitTorrent-1.1
BSL-1.0BorceuxBSD-2-Clause
BSD-2-Clause-FreeBSDBSD-2-Clause-NetBSDBSD-3-Clause
BSD-3-Clause-ClearBSD-4-ClauseBSD-Protection
BSD-3-Clause-AttributionBSD-4-Clause-UCbzip2-1.0.5
bzip2-1.0.6CalderaCECILL-1.0
CECILL-1.1CECILL-2.0CECILL-B
CECILL-CClArtisticMIT-CMU
CNRI-JythonCNRI-PythonCNRI-Python-GPL-Compatible
CPOL-1.02CDDL-1.0CDDL-1.1
CPAL-1.0CPL-1.0CATOSL-1.1
Condor-1.1CC-BY-1.0CC-BY-2.0
CC-BY-2.5CC-BY-3.0CC-BY-4.0
CC-BY-ND-1.0CC-BY-ND-2.0CC-BY-ND-2.5
CC-BY-ND-3.0CC-BY-ND-4.0CC-BY-NC-1.0
CC-BY-NC-2.0CC-BY-NC-2.5CC-BY-NC-3.0
CC-BY-NC-4.0CC-BY-NC-ND-1.0CC-BY-NC-ND-2.0
CC-BY-NC-ND-2.5CC-BY-NC-ND-3.0CC-BY-NC-ND-4.0
CC-BY-NC-SA-1.0CC-BY-NC-SA-2.0CC-BY-NC-SA-2.5
CC-BY-NC-SA-3.0CC-BY-NC-SA-4.0CC-BY-SA-1.0
CC-BY-SA-2.0CC-BY-SA-2.5CC-BY-SA-3.0
CC-BY-SA-4.0CC0-1.0Crossword
CUA-OPL-1.0CubeD-FSL-1.0
diffmarkWTFPLDOC
DotseqnDSDPdvipdfm
EPL-1.0ECL-1.0ECL-2.0
eGenixEFL-1.0EFL-2.0
MIT-advertisingMIT-ennaEntessa
ErlPL-1.1EUDatagridEUPL-1.0
EUPL-1.1EurosymFair
MIT-fehFrameworx-1.0FreeImage
FTLFSFULFSFULLR
GiftwareGL2PSGlulxe
AGPL-3.0GFDL-1.1GFDL-1.2
GFDL-1.3GPL-1.0GPL-2.0
GPL-3.0LGPL-2.1LGPL-3.0
LGPL-2.0gnuplotgSOAP-1.3b
HaskellReportHPNDIBM-pibs
IPL-1.0ICUImageMagick
iMatixImlib2IJG
Intel-ACPIIntelIPA
ISCJasPer-2.0JSON
LPPL-1.3aLPPL-1.0LPPL-1.1
LPPL-1.2LPPL-1.3cLatex2e
BSD-3-Clause-LBNLLeptonicaLGPLLR
LibpnglibtiffLPL-1.02
LPL-1.0MakeIndexMTLL
MS-PLMS-RLMirOS
MITNFAMITMotosoto
MPL-1.0MPL-1.1MPL-2.0
MPL-2.0-no-copyleft-exceptionmpich2Multics
MupNASA-1.3Naumen
NBPL-1.0NetCDFNGPL
NOSLNPL-1.0NPL-1.1
NewsletrNLPLNokia
NPOSL-3.0NowebNRL
NTPNunitOCLC-2.0
ODbL-1.0PDDL-1.0OGTSL
OLDAP-2.2.2OLDAP-1.1OLDAP-1.2
OLDAP-1.3OLDAP-1.4OLDAP-2.0
OLDAP-2.0.1OLDAP-2.1OLDAP-2.2
OLDAP-2.2.1OLDAP-2.3OLDAP-2.4
OLDAP-2.5OLDAP-2.6OLDAP-2.7
OLDAP-2.8OMLOPL-1.0
OSL-1.0OSL-1.1OSL-2.0
OSL-2.1OSL-3.0OpenSSL
PHP-3.0PHP-3.01Plexus
PostgreSQLpsfragpsutils
Python-2.0QPL-1.0Qhull
RdiscRPSL-1.0RPL-1.1
RPL-1.5RHeCos-1.1RSCPL
RSA-MDRubySAX-PD
SaxpathSCEASWL
SGI-B-1.0SGI-B-1.1SGI-B-2.0
OFL-1.0OFL-1.1SimPL-2.0
SleepycatSNIASpencer-86
Spencer-94Spencer-99SMLNJ
SugarCRM-1.1.3SISSLSISSL-1.2
SPL-1.0Watcom-1.0TCL
UnlicenseTMateTORQUE-1.1
TOSLUnicode-TOUUPL-1.0
NCSAVimVOSTROM
VSL-1.0W3C-19980720W3C
WsuipaXnetX11
XeroxXFree86-1.1xinetd
xppXSkatYPL-1.0
YPL-1.1ZedZend-2.0
Zimbra-1.3Zimbra-1.4Zlib
zlib-acknowledgementZPL-1.1ZPL-2.0
ZPL-2.1